Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -84,10 +84,10 @@ Based on the issue we shall discuss the merit of the new feature and decide whet
 ### Step 2: implementation and verification
 Contributor will go ahead and implement the feature, and the GPT-NeoX team will provide guidance/helps as needed. The required deliverables include:
 
-* A PR to [EleutherAI/GPT-NeoX](https://github.com/EleutherAI/gpt-neox) including (1) the feature implementation (2) unit tests (3) documentation (4) tutorial
+* A PR to [EleutherAI/GPT-NeoX](https://github.com/EleutherAI/gpt-neox) including (1) the feature implementation (2) unit tests (3) documentation (4) example usage.
 * In the implementation (code, documentation, tutorial), we require the feature author to record their GitHub username as a contact method for future questions/maintenance.
 
 After receiving the PRs, we will review them and merge them after necessary tests/fixes.
 
 ### Step 3: release and maintenance
-After the PRs are merged, we will announce the feature on our website (with credit to the feature author). We ask the feature author to commit to the maintenance of the feature.
+After the PRs are merged, we will announce the feature on our website (with credit to the feature author). We ask the feature author to commit to the maintenance of the feature.