Fixes for README_ZH (#7506)

Author: jolheiser

README_ZH.md

@@ -3,13 +3,13 @@
 # Gitea - Git with a cup of tea
 
 [![Build Status](https://drone.gitea.io/api/badges/go-gitea/gitea/status.svg)](https://drone.gitea.io/go-gitea/gitea)
-[![Join the chat at https://img.shields.io/discord/322538954119184384.svg](https://img.shields.io/discord/322538954119184384.svg)](https://discord.gg/NsatcWJ)
+[![Join the chat at https://img.shields.io/discord/322538954119184384.svg](https://img.shields.io/discord/322538954119184384.svg)](https://discord.gg/gitea)
 [![](https://images.microbadger.com/badges/image/gitea/gitea.svg)](https://microbadger.com/images/gitea/gitea "Get your own image badge on microbadger.com")
 [![codecov](https://codecov.io/gh/go-gitea/gitea/branch/master/graph/badge.svg)](https://codecov.io/gh/go-gitea/gitea)
 [![Go Report Card](https://goreportcard.com/badge/code.gitea.io/gitea)](https://goreportcard.com/report/code.gitea.io/gitea)
 [![GoDoc](https://godoc.org/code.gitea.io/gitea?status.svg)](https://godoc.org/code.gitea.io/gitea)
 [![GitHub release](https://img.shields.io/github/release/go-gitea/gitea.svg)](https://github.com/go-gitea/gitea/releases/latest)
-[![Become a backer/sponsor of gitea](https://opencollective.com/gitea/tiers/backer/badge.svg?label=backer&color=brightgreen)](https://opencollective.com/gitea)
+[![Become a backer/sponsor of gitea](https://opencollective.com/gitea/tiers/backers/badge.svg?label=backer&color=brightgreen)](https://opencollective.com/gitea)
 
 ## 目标
 
@@ -25,7 +25,7 @@ Gitea 的首要目标是创建一个极易安装，运行非常快速，安装
 
 ## 文档
 
-关于如何安装请访问我们的 [文档站](https://docs.gitea.io/zh-cn/)，如果没有找到对应的文档，你也可以通过 [Discord - 英文](https://discord.gg/NsatcWJ) 和 QQ群 328432459 来和我们交流。
+关于如何安装请访问我们的 [文档站](https://docs.gitea.io/zh-cn/)，如果没有找到对应的文档，你也可以通过 [Discord - 英文](https://discord.gg/gitea) 和 QQ群 328432459 来和我们交流。
 
 ## 贡献流程