Update README.rst

fix README format error

Author: Root-lee

README.rst

@@ -873,6 +873,7 @@ Libraries for GopherLua
 - `glua-async <https://github.com/CuberL/glua-async>`_ : An async/await implement for gopher-lua.
 - `gopherlua-debugger <https://github.com/edolphin-ydf/gopherlua-debugger>`_ : A debugger for gopher-lua
 - `gluamahonia <https://github.com/super1207/gluamahonia>`_ : An encoding converter for gopher-lua
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