Add paullee-yb to CONTRIBUTORS.md

Summary: Add myself to contributors list

Test Plan: N/A

Reviewers: smishra

Reviewed By: smishra

Differential Revision: https://phabricator.dev.yugabyte.com/D17040

CONTRIBUTORS.md

@@ -151,3 +151,4 @@ This is a list of people who have contributed code to the [YugabyteDB](https://g
 * [vaibhav-yb](https://github.com/vaibhav-yb)
 * [arpang](https://github.com/arpang)
 * [adithya-yb](https://github.com/adithya-yb)
+* [paullee-yb](https://github.com/paullee-yb)