add metadata descriptions

Author: commit111

docs/tutorials/deploy-openai-apps/aws-bedrock.mdx

@@ -1,6 +1,7 @@
 ---
 title: AWS Bedrock
 sidebar_position: 50
+description: Deploy OpenAI Apps to AWS Bedrock using Defang.
 ---
 import React from 'react';
 import {useColorMode} from '@docusaurus/theme-common';

docs/tutorials/deploy-openai-apps/deploy-openai-apps.mdx

@@ -1,11 +1,12 @@
 ---
 title: Deploy OpenAI Apps on Managed LLMs
 sidebar_position: 45
+description: Deploy OpenAI Apps on Managed LLMs
 ---
 
 # Deploy OpenAI Apps on Managed LLMs
 
-Defang currently supports using Managed LLMs with AWS Bedrock and GCP Vertex AI. Follow the link below for your specific platform.
+Defang currently supports using Managed LLMs on AWS Bedrock and GCP Vertex AI. Follow the link below for your specific platform.
 
 - [AWS Bedrock](/docs/tutorials/deploy-openai-apps/aws-bedrock/)
 - [GCP Vertex AI](/docs/tutorials/deploy-openai-apps/gcp-vertex/)

docs/tutorials/deploy-openai-apps/gcp-vertex.mdx

@@ -1,6 +1,7 @@
 ---
 title: GCP Vertex AI
 sidebar_position: 50
+description: Deploy OpenAI Apps to GCP Vertex AI using Defang.
 ---
 import React from 'react';
 import {useColorMode} from '@docusaurus/theme-common';