Fixing link appearances in README

Author: larryshamalama

README.rst

@@ -122,10 +122,10 @@ Contributing
 We welcome bug reports and fixes and improvements to the documentation.
 
 For more information on contributing, please see the
-`contributing guide <https://github.com/aesara-devs/aesara/CONTRIBUTING.md>`.
+`contributing guide <https://github.com/aesara-devs/aesara/CONTRIBUTING.md>`__.
 
 A good place to start contributing is by looking through the issues
-`here <https://github.com/aesara-devs/aesara/issues`.
+`here <https://github.com/aesara-devs/aesara/issues>`__.
 
 Support
 =======