Added ClangFormat to IDE beautifier plugin list

(cherry picked from commit a5649d11e73c24906e6c57618d35e0a5adaa8557)

community/contributing/code_style_guidelines.rst

@@ -115,9 +115,10 @@ clang-format automatically, for example each time you save a file.
 
 Here is a non-exhaustive list of beautifier plugins for some IDEs:
 
-- Qt Creator: `Beautifier plugin <http://doc.qt.io/qtcreator/creator-beautifier.html>`_
-- Visual Studio Code: `Clang-Format <https://marketplace.visualstudio.com/items?itemName=xaver.clang-format>`_
-- vim: `vim-clang-format <https://github.com/rhysd/vim-clang-format>`_
+- Qt Creator: `Beautifier plugin <http://doc.qt.io/qtcreator/creator-beautifier.html>`__
+- Visual Studio Code: `Clang-Format <https://marketplace.visualstudio.com/items?itemName=xaver.clang-format>`__
+- Visual Studio: `ClangFormat <https://marketplace.visualstudio.com/items?itemName=LLVMExtensions.ClangFormat>`__
+- vim: `vim-clang-format <https://github.com/rhysd/vim-clang-format>`__
 
 (Pull requests welcome to extend this list with tested plugins.)