Fix duplicate redirects and add missing one (#296)

Author: remotesynth

public/_redirects

@@ -391,7 +391,6 @@
 /user-guide/state-management/pods-cli/ /aws/capabilities/state-management/cli-commands 301
 /user-guide/aws/dynamodbstreams/ /aws/services/dynamodbstreams 301
 /references/api-key/ /aws/getting-started/auth-token/#how-do-i-activate-older-versions-of-localstack-before-v30 301
-/user-guide/ci/ /aws/user-guide/ci 301
 /references/coverage/coverage_eks/ /aws/services/eks 301
 /references/coverage/coverage_cognito-idp/ /aws/services/cognito-idp 301
 /user-guide/web-application/workspace/ /aws/capabilities/web-app/workspace 301
@@ -407,7 +406,6 @@
 /references/filesystem/ /aws/capabilities/config/filesystem/ 301
 /references/ /aws/capabilities/config/ 301
 /academy/localstack-101/getting-started/ https://www.youtube.com/watch?v=CzX4mfiS058&feature=youtu.be 301
-
 /legal/third-party-software-tools /aws/legal/third-party-software-tools 301
 /references/coverage/coverage_elb /aws/services/elb 301
 /user-guide/aws/batch /aws/services/batch 301
@@ -801,7 +799,6 @@
 /user-guide/state-management/pods-cli /aws/capabilities/state-management/cli-commands 301
 /user-guide/aws/dynamodbstreams /aws/services/dynamodbstreams 301
 /references/api-key /aws/getting-started/auth-token/#how-do-i-activate-older-versions-of-localstack-before-v30 301
-/user-guide/ci /aws/user-guide/ci 301
 /references/coverage/coverage_eks /aws/services/eks 301
 /references/coverage/coverage_cognito-idp /aws/services/cognito-idp 301
 /user-guide/web-application/workspace /aws/capabilities/web-app/workspace 301
@@ -818,6 +815,9 @@
 /references /aws/capabilities/config/ 301
 /academy/localstack-101/getting-started https://www.youtube.com/watch?v=CzX4mfiS058&feature=youtu.be 301
 /user-guide/materalized-views /snowflake/features/materialized-views/ 301
+/user-guide/materalized-views/ /snowflake/features/materialized-views/ 301
+/snowflake/features/materalized-views/ /snowflake/features/materialized-views/ 301
+/snowflake/features/materalized-views/ /snowflake/features/materialized-views/ 301
 /user-guide/ci /aws/integrations/continuous-integration/ 301
 /aws/tooling/lambda-tools/vscode-extension/ /aws/tooling/vscode-extension/ 301
 /aws/tooling/lambda-tools/vscode-extension /aws/tooling/vscode-extension/ 301