docs: Added route for contributing on readme, and fixed a graphical bug on the badges at the top of the documentation (#208)

Author: TimothyMalahy

Diff for: README.md

@@ -13,3 +13,6 @@ django-tasks-scheduler is developed for free.
 You can support this project by becoming a sponsor using [this link](https://github.com/sponsors/cunla).
 
 
+# Contributing 
+
+Interested in contributing, providing suggestions, or submitting bugs? See guidelines [at this link](.github/CONTRIBUTING.md).

Diff for: docs/index.md

@@ -2,8 +2,7 @@
 
 [![Django CI][badge]][2]
 ![badge][coverage]
-[![badge][pypi-downloads]][pypi]
-
+[![badge](https://img.shields.io/pypi/dm/django-tasks-scheduler)](https://pypi.org/project/django-tasks-scheduler/)
 ---
 
 A database backed asynchronous tasks scheduler for django.