Update CONTRIBUTING.md
Use https://
@@ -295,8 +295,8 @@ Instances of abusive, harassing, or otherwise unacceptable behavior
may be reported by opening an issue
or contacting one or more of the project maintainers.
-This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org), version 1.2.0,
-available at [http://contributor-covenant.org/version/1/2/0/](http://contributor-covenant.org/version/1/2/0/)
+This Code of Conduct is adapted from the [Contributor Covenant](https://contributor-covenant.org), version 1.2.0,
+available at [https://contributor-covenant.org/version/1/2/0/](https://contributor-covenant.org/version/1/2/0/)
[gcloudcli]: https://developers.google.com/cloud/sdk/gcloud/
[indvcla]: https://developers.google.com/open-source/cla/individual
