use official m.css repo (#64)

Author: TheLartians

documentation/CMakeLists.txt

@@ -11,9 +11,8 @@ CPMAddPackage(NAME Greeter SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/..)
 CPMAddPackage(
   NAME MCSS
   DOWNLOAD_ONLY YES
-  # patched version until https://github.com/mosra/m.css/pull/171 is resolved
-  GITHUB_REPOSITORY TheLartians/m.css
-  GIT_TAG 1bf162b96d5bfefc9967a80cef138f1270ffa415
+  GITHUB_REPOSITORY mosra/m.css
+  GIT_TAG 42d4a9a48f31f5df6e246c948403b54b50574a2a
 )
 
 # ---- Doxygen variables ----