update docs

plugin/builtin_plugins.md

@@ -667,8 +667,8 @@ This plug-in can help users quickly generate installation packages and source co
 - runself (shell) self-compile installation package
 - zip/tar.gz binary package
 - zip/tar.gz source package
-- RPM binary installation package (to be supported)
-- SRPM source code installation package (to be supported)
+- RPM binary installation package
+- SRPM source code installation package
 - DEB binary installation package (to be supported)
 
 Here is a complete example, we can take a brief look at it first:

zh-cn/plugin/builtin_plugins.md

@@ -682,8 +682,8 @@ $ xmake check clang.tidy --fix_notes
 - runself (shell) 自编译安装包
 - zip/tar.gz 二进制包
 - zip/tar.gz 源码包
-- RPM 二进制安装包（待支持）
-- SRPM 源码安装包（待支持）
+- RPM 二进制安装包
+- SRPM 源码安装包
 - DEB 二进制安装包（待支持）
 
 下面是一个完整例子，我们可以先简单看下：