Merge pull request #1777 from wojiushixiaobai/docs

[Update]修改文档

docs/setup_by_local.rst

@@ -21,6 +21,7 @@ CentOS 7 组件离线安装文档
     $ tar xf coco.tar.gz -C /opt
     $ tar xf luna.tar.gz -C /opt
     $ tar xf package.tar.gz -C /opt
+    $ tar xf autoenv.tar.gz -C /opt
     $ mv guacamole.tar /opt
 
     # yum update -y