Update the PR description for auto webassets udpates (#10212)
Update the PR description for auto webassets udpates (#10212)

The script for updating webassets uses the commit message from
webapps as the commit message for the PR to teleport.

This commit message is almost always a merged PR, which has the format:

    do some awesome thing (#123)

Where '#123' is the number of the **webapps** PR that was merged.

The problem with this is, when the teleport PR is created, it interprets
the #123 as the number of a **teleport** PR. And since the Teleport repo
has a lot more issues/PRs than webapps, Github ends up linking to an old
and completely unrelated PR.

Fix this by replacing (#123) with (gravitational/webapps#123), which
Github correctly renders as a link to the webapps PR in question.
gravitational/teleport,gravitational/teleport,gravitational/teleport,gravitational/teleport,gravitational/teleport,gravitational/teleport