Update CONTRIBUTING.md

Author: saadmanrafat

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 Any contributions should follow the following pattern:
 
-* Make a feature or bugfix branch, e.g., git checkout -b my_new_feature
+* Make a feature or bugfix branch, e.g., `git checkout -b my_new_feature`
 * Make your changes in that branch
 * Ensure you bump the version number in setup.py to reflect your changes. We use Semantic Versioning, so non-breaking enhancements should increment the minor version, e.g., `1.5.0` -> `1.6.0`, and bugfixes will increment the last version, `1.6.0` -> `1.6.1`.
 * Create a pull request