Update CODE_OF_CONDUCT.md

Author: Shixian Sheng

CODE_OF_CONDUCT.md

@@ -115,12 +115,11 @@ community.
 ## Attribution
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 2.1, available at
-[https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
+version [v2.1](https://www.contributor-covenant.org/version/2/1/code_of_conduct.html).
 
 Community Impact Guidelines were inspired by
 [Mozilla's code of conduct enforcement ladder][Mozilla CoC].
 
 For answers to common questions about this code of conduct, see the FAQ at
-[https://www.contributor-covenant.org/faq][FAQ]. Translations are available at
-[https://www.contributor-covenant.org/translations][translations]
+[FAQ](https://www.contributor-covenant.org/faq). Translations are available at
+[translations](https://www.contributor-covenant.org/translations)