Missing release tag for last version

### Steps to reproduce

- Go to the doc in the last version (`v3.7.11`). For example: https://hexdocs.pm/timex/3.7.11/getting-started.html
- Click on the `View Source` button in the upper right corner (the `` button).
- This land in a 404 on github. For example https://github.com/bitwalker/timex/blob/3.7.11/docs/Getting%20Started.md#L1

### Description of issue

I think the problem is that the tag for the version `3.7.11` is missing for the[ release 3.7.11 commit](https://github.com/bitwalker/timex/commit/82063b3a2b31b5e06486f7f4125d051cfa094a57). The[ last tag](https://github.com/bitwalker/timex/tags) is `3.7.9`.

It should be similar to [this case](https://github.com/bitwalker/timex/commit/e1c4d424a5c7840f63efd33cd70e3b5d4f9bfaa1), that the release is done and also the tag [3.7.9](https://github.com/bitwalker/timex/releases/tag/3.7.9) is created.

Another strange thing: in the repo there is the release of [version 3.7.10](https://github.com/bitwalker/timex/commit/52eb5b345a41b35c6f8e833bec716e65beb56b42) but it does not exist in the doc (Jump from 3.7.9 to 3.7.11) nor in [hex.pm](https://hex.pm/packages/timex/versions). And also the tag for that version is missing.