A little work to improve SEO results

docs/en_US/case/case3.md

@@ -1,4 +1,4 @@
-# Build your own server status query Telegram bot with multi-language and multi-user support
+# Build your own server status query Telegram bot
 Contributor: 
 + [tech-fever](https://github.com/tech-fever)
 

docs/en_US/case/case5.md

@@ -8,7 +8,7 @@ GitHub project:  [Argo-Nezha-Service-Container](https://github.com/fscarmen2/Arg
 Mirror backup (not live update): [Argo-Nezha-Service-Container](https://github.com/nezhahq/Argo-Nezha-Service-Container)
 * * * *
 
-# Catalog
+## Catalog
 
 - [Project Features](case5.md#project-features)
 - [How to get Argo authentication: json or token](case5.md#How-to-get-Argo-authentication-json-or-token)

docs/en_US/case/index.md

@@ -1,7 +1,7 @@
 ---
 layout: home
 
-title: Nezha Monitoring  
+title: NeZha Monitoring - Server monitoring and maintenance tools  
 titleTemplate: Community Project
 
 hero: