Configuration docs link is incorrect in hydra serve --help

[goknsh]

Describe the bug

Link to configuration documentation when running hydra serve --help shows a link to: https://github.com/ory/hydra/blob/v1.0.0+oryOS.12/docs/config.yaml, which leads to a 404 page.

Reproducing the bug

Steps to reproduce the behavior:

1. Install Hydra with:

$ curl https://raw.githubusercontent.com/ory/hydra/master/install.sh | bash -s -- -b .

2. Run command to view help info:

$ ./hydra serve --help

Expected behavior
See serve.go:
Looks like the URL for config documentation is being generate using the installed Version.

It should instead use the commit for the installed Version.
So if the error is corrected, the correct URL would be:
https://github.com/ory/hydra/blob/<commit>/docs/config.yaml

[aeneasr]

Nice catch! Would you be up for a PR?

[goknsh]

I am going to try.

[goknsh]

I think changing Version to Commit should work, but I am unsure and could not setup the Hydra development environment to test it.