fix: omit file extension

Signed-off-by: Christine <[email protected]>

Author: CBID2

website/library/reference/index.md

@@ -4,6 +4,6 @@
 :maxdepth: 1
 
 Links for technical writers <links-for-technical-writers>
-how-to-review-someones-work how-to-implement-peer-reviewers-feedback.md
+how-to-review-someones-work how-to-implement-peer-reviewers-feedback
 
 ```