fix: make ApproximateNumberOfMessagesVisible a technical term

Author: danieldanielecki

README.md

@@ -351,7 +351,7 @@ We are so thankful for every contribution, which makes sure we can deliver top-n
 | 205 | [A company is developing a web application that allows its employees to upload a profile picture to a private Amazon S3 bucket. There is no size limit for the profile pictures, which should be displayed every time an employee logs in. For security reasons, the pictures cannot be publicly accessible. What is a viable long-term solution for this scenario?](#a-company-is-developing-a-web-application-that-allows-its-employees-to-upload-a-profile-picture-to-a-private-amazon-s3-bucket-there-is-no-size-limit-for-the-profile-pictures-which-should-be-displayed-every-time-an-employee-logs-in-for-security-reasons-the-pictures-cannot-be-publicly-accessible-what-is-a-viable-long-term-solution-for-this-scenario)
 | 206 | [A Developer is going to deploy an AWS Lambda function that requires significant CPU utilization. Which approach will MINIMIZE the average runtime of the function?](#a-developer-is-going-to-deploy-an-aws-lambda-function-that-requires-significant-cpu-utilization-which-approach-will-minimize-the-average-runtime-of-the-function)
 | 207 | [A company has a legacy application that was migrated to a fleet of Amazon EC2 instances. The application stores data in a MySQL database that is currently installed on a single EC2 instance. The company has decided to migrate the database from the EC2 instance to MySQL on Amazon RDS. What should the Developer do to update the application to support data storage in Amazon RDS?](#a-company-has-a-legacy-application-that-was-migrated-to-a-fleet-of-amazon-ec2-instances-the-application-stores-data-in-a-mysql-database-that-is-currently-installed-on-a-single-ec2-instance-the-company-has-decided-to-migrate-the-database-from-the-ec2-instance-to-mysql-on-amazon-rds-what-should-the-developer-do-to-update-the-application-to-support-data-storage-in-amazon-rds)
-| 208 | [A Developer has an e-commerce API hosted on Amazon ECS. Variable and spiking demand on the application is causing order processing to take too long. The application processes Amazon SQS queues. The ApproximateNumberOfMessagesVisible metric spikes at very high values throughout the day, which cause Amazon CloudWatch alarm breaches. Other ECS metrics for the API containers are well within limits. What can the Developer implement to improve performance while keeping costs low?](#a-developer-has-an-e-commerce-api-hosted-on-amazon-ecs-variable-and-spiking-demand-on-the-application-is-causing-order-processing-to-take-too-long-the-application-processes-amazon-sqs-queues-the-approximatenumberofmessagesvisible-metric-spikes-at-very-high-values-throughout-the-day-which-cause-amazon-cloudwatch-alarm-breaches-other-ecs-metrics-for-the-api-containers-are-well-within-limits-what-can-the-developer-implement-to-improve-performance-while-keeping-costs-low)
+| 208 | [A Developer has an e-commerce API hosted on Amazon ECS. Variable and spiking demand on the application is causing order processing to take too long. The application processes Amazon SQS queues. The `ApproximateNumberOfMessagesVisible` metric spikes at very high values throughout the day, which cause Amazon CloudWatch alarm breaches. Other ECS metrics for the API containers are well within limits. What can the Developer implement to improve performance while keeping costs low?](#a-developer-has-an-e-commerce-api-hosted-on-amazon-ecs-variable-and-spiking-demand-on-the-application-is-causing-order-processing-to-take-too-long-the-application-processes-amazon-sqs-queues-the-approximatenumberofmessagesvisible-metric-spikes-at-very-high-values-throughout-the-day-which-cause-amazon-cloudwatch-alarm-breaches-other-ecs-metrics-for-the-api-containers-are-well-within-limits-what-can-the-developer-implement-to-improve-performance-while-keeping-costs-low)
 | 209 | [A Developer wants to build an application that will allow new users to register and create new user accounts. The application must also allow users with social media accounts to log in using their social media credentials. Which AWS service or feature can be used to meet these requirements?](#a-developer-wants-to-build-an-application-that-will-allow-new-users-to-register-and-create-new-user-accounts-the-application-must-also-allow-users-with-social-media-accounts-to-log-in-using-their-social-media-credentials-which-aws-service-or-feature-can-be-used-to-meet-these-requirements)
 | 210 | [A company wants to implement authentication for its new REST service using Amazon API Gateway. To authenticate the calls, each request must include HTTP headers with a client ID and user ID. These credentials must be compared to authentication data in an Amazon DynamoDB table. What MUST the company do to implement this authentication in API Gateway?](#a-company-wants-to-implement-authentication-for-its-new-rest-service-using-amazon-api-gateway-to-authenticate-the-calls-each-request-must-include-http-headers-with-a-client-id-and-user-id-these-credentials-must-be-compared-to-authentication-data-in-an-amazon-dynamodb-table-what-must-the-company-do-to-implement-this-authentication-in-api-gateway)
 | 211 | [A Developer is trying to make API calls using SDK. The IAM user credentials used by the application require multi-factor authentication for all API calls. Which method the Developer use to access the multi-factor authentication protected API?](#a-developer-is-trying-to-make-api-calls-using-sdk-the-iam-user-credentials-used-by-the-application-require-multi-factor-authentication-for-all-api-calls-which-method-the-developer-use-to-access-the-multi-factor-authentication-protected-api)
@@ -2435,7 +2435,7 @@ We are so thankful for every contribution, which makes sure we can deliver top-n
 
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-### A Developer has an e-commerce API hosted on Amazon ECS. Variable and spiking demand on the application is causing order processing to take too long. The application processes Amazon SQS queues. The ApproximateNumberOfMessagesVisible metric spikes at very high values throughout the day, which cause Amazon CloudWatch alarm breaches. Other ECS metrics for the API containers are well within limits. What can the Developer implement to improve performance while keeping costs low?
+### A Developer has an e-commerce API hosted on Amazon ECS. Variable and spiking demand on the application is causing order processing to take too long. The application processes Amazon SQS queues. The `ApproximateNumberOfMessagesVisible` metric spikes at very high values throughout the day, which cause Amazon CloudWatch alarm breaches. Other ECS metrics for the API containers are well within limits. What can the Developer implement to improve performance while keeping costs low?
 
 - [x] Target tracking scaling policy.
 - [ ] Docker Swarm.