chore: Update LuaRocks references to new package

Author: MeanderingProgrammer

README.md

@@ -78,12 +78,10 @@ Plugin to improve viewing Markdown files in Neovim
 
 ## rocks.nvim
 
-This plugin is available on [LuaRocks](https://luarocks.org/modules/MeanderingProgrammer/markdown.nvim)
-
-- TODO: Publish this under both packages?
+This plugin is available on [LuaRocks](https://luarocks.org/modules/MeanderingProgrammer/render-markdown.nvim)
 
 ```vim
-:Rocks install markdown.nvim
+:Rocks install render-markdown.nvim
 ```
 
 ## packer.nvim

doc/render-markdown.txt

@@ -106,12 +106,10 @@ LAZY.NVIM                                  *render-markdown-install-lazy.nvim*
 ROCKS.NVIM                                *render-markdown-install-rocks.nvim*
 
 This plugin is available on LuaRocks
-<https://luarocks.org/modules/MeanderingProgrammer/markdown.nvim>
-
-- TODO: Publish this under both packages?
+<https://luarocks.org/modules/MeanderingProgrammer/render-markdown.nvim>
 
 >vim
-    :Rocks install markdown.nvim
+    :Rocks install render-markdown.nvim
 <