chore: add top level description (#790)

Signed-off-by: rogerogers <[email protected]>

Author: rogerogers

content/en/docs/_index.md

@@ -1,14 +1,9 @@
-
 ---
-title: "Documentation"
-linkTitle: "Documentation"
+title: 'Documentation'
+linkTitle: 'Documentation'
 weight: 1
 isFolder: true
 menu:
   main:
     weight: 1
 ---
-
-
-
-

content/en/docs/cwgo/_index.md

@@ -2,6 +2,7 @@
 title: 'Cwgo'
 linkTitle: 'Cwgo'
 weight: 5
+Description: Cwgo is a CloudWeGo All in one code generation tool, which integrates the advantages of each component to improve the developer experience.
 menu:
   main:
     weight: 5

content/en/docs/hertz/_index.md

@@ -2,6 +2,7 @@
 title: 'Hertz'
 linkTitle: 'Hertz'
 weight: 2
+Description: Hertz [həːts] is a high-performance, high-usability, extensible HTTP framework for Go. It's designed to make it easy for developers to build microservices.
 menu:
   main:
     weight: 2

content/en/docs/kitex/_index.md

@@ -2,6 +2,7 @@
 title: 'Kitex'
 linkTitle: 'Kitex'
 weight: 1
+Description: Kitex [kaɪt'eks] is a **high-performance** and **strong-extensibility** Golang RPC framework that helps developers build microservices. If the performance and extensibility are the main concerns when you develop microservices, Kitex can be a good choice.
 menu:
   main:
     weight: 1

content/en/docs/motore/_index.md

@@ -2,6 +2,7 @@
 title: 'Motore'
 linkTitle: 'Motore'
 weight: 6
+Description: Motore is an async middleware abstraction powered by GAT and TAIT.
 menu:
   main:
     weight: 6

content/en/docs/netpoll/_index.md

@@ -2,6 +2,7 @@
 title: 'Netpoll'
 linkTitle: 'Netpoll'
 weight: 4
+Description: Netpoll is a high-performance non-blocking I/O networking framework, which focused on RPC scenarios, developed by ByteDance.
 menu:
   main:
     weight: 4

content/en/docs/pilota/_index.md

@@ -2,6 +2,7 @@
 title: 'Pilota'
 linkTitle: 'Pilota'
 weight: 7
+Description: Pilota is a thrift and protobuf implementation in pure rust with high performance and extensibility.
 menu:
   main:
     weight: 7

content/en/docs/volo/_index.md

@@ -2,6 +2,7 @@
 title: 'Volo'
 linkTitle: 'Volo'
 weight: 3
+Description: Volo is a **high-performance** and **strong-extensibility** Rust RPC framework that helps developers build microservices.
 menu:
   main:
     weight: 3

content/zh/docs/cwgo/_index.md

@@ -2,6 +2,7 @@
 title: 'Cwgo'
 linkTitle: 'Cwgo'
 weight: 5
+Description: Cwgo 是 CloudWeGo All in one 代码生成工具，整合了各个组件的优势，提高开发者提体验。
 menu:
   main:
     weight: 5

content/zh/docs/hertz/_index.md

@@ -2,6 +2,7 @@
 title: 'Hertz'
 linkTitle: 'Hertz'
 weight: 2
+Description: Hertz [həːts] 是一个 Golang 微服务 HTTP 框架，具有高易用性、高性能、高扩展性等特点。如果对微服务性能有要求，又希望框架能够充分满足内部的可定制化需求，Hertz 会是一个不错的选择。
 menu:
   main:
     weight: 2