fixing inconsistent naming from Flask to FastAPI (#79)

Co-authored-by: Abdullatif Rashdan <arashdan@amazon.com>

Author: cerashdan

docs/user-guide/deploy/deploy_to_aws_fargate.md

@@ -8,7 +8,7 @@ This guide discusses Fargate integration at a high level - for a complete exampl
 
 ## Creating Your Agent in Python
 
-The core of your Fargate deployment is a containerized Flask application that hosts your Strands Agents SDK agent. This Python application initializes your agent and processes incoming HTTP requests.
+The core of your Fargate deployment is a containerized FastAPI application that hosts your Strands Agents SDK agent. This Python application initializes your agent and processes incoming HTTP requests.
 
 The FastAPI application follows these steps: