Update CONTRIBUTING.rst

CONTRIBUTING.rst

@@ -39,7 +39,7 @@ You may or may not find it much relevant but I prefer few conventions and code s
 - Please do follow the Python `PEP 8`_ style guide.
 - You may or may not include docstrings. Although it's required but can also be added later on after making the PR.
 - Prefer prefixing the commit messages with emojis. Check the `Emoji Usage Reference`_ for info on which emoji to use.
-- Explicitly mention and inherit ``object`` when writing classes. For example, prefer `class Foo(object): ...` over ``class Foo: ...``.
+- Explicitly mention and inherit ``object`` when writing classes. For example, prefer ``class Foo(object): ...`` over ``class Foo: ...``.
 - Prefer relative imports over absolute imports.
 
 Emoji Usage Reference