Fixed contribution links.

Author: stevemorad

CONTRIBUTING.md

@@ -11,7 +11,7 @@ information to effectively respond to your bug report or contribution.
 
 We welcome you to use the GitHub issue tracker to report bugs or suggest features.
 
-When filing an issue, please check [existing open](https://github.com/awslabs/workspaces-cost-optimizer/issues), or [recently closed](https://github.com/awslabs/workspaces-cost-optimizer/issues?utf8=%E2%9C%93&q=is%3Aissue%20is%3Aclosed%20), issues to make sure somebody else hasn't already 
+When filing an issue, please check [existing open](https://github.com/awslabs/serverless-image-handler/issues), or [recently closed](https://github.com/awslabs/serverless-image-handler/issues?utf8=%E2%9C%93&q=is%3Aissue%20is%3Aclosed%20), issues to make sure somebody else hasn't already 
 reported the issue. Please try to include as much information as you can. Details like these are incredibly useful:
 
 * A reproducible test case or series of steps