更新 README.md，修正 Gitea Runner 缓存服务器标题并简化启动说明

README.md

@@ -1,8 +1,6 @@
 # act-runner-example
 
-## Gitea Runner 缓存的服务器 [^1]
-
-### 启动
+## Gitea Runner 缓存服务器 [^1]
 ```bash
 docker rm -f gitea-runner-cache-server
 docker run -d --name gitea-runner-cache-server \
@@ -20,7 +18,7 @@ docker run -d --name gitea-runner-cache-server \
 docker logs gitea-runner-cache-server
 ```
 
-## 启动 Gitea Runner
+## Gitea Runner
 - https://github.com/vegardit/docker-gitea-act-runner#additional-environment-variables
 
 ```bash