open-pr: fix the Git LFS link to use when opening a PR

It has been reported in
git-for-windows/git#5276 (comment)
that the Git LFS link in the release notes was incorrect.

The reason is that we have some special handling of Git LFS so that we
do not get the (rather ugly) _tag_ URL but instead the _release_ URL.

Example: git-for-windows/git#5266 refers to
https://github.com/git-lfs/git-lfs/releases/tag/v3.6.0 because this is
the URL from the feed from which the `monitor-components` gets it:
https://github.com/git-for-windows/git/blob/v2.47.1.windows.1/.github/workflows/monitor-components.yml#L29-L3

The corresponding PR at
git-for-windows/build-extra#581 (opened via
`/open pr` at
git-for-windows/git#5266 (comment))
has the link https://github.com/git-lfs/git-lfs/releases/tag/3.6.0 (note
the missing `v` after the last slash).

This commit ensures that future `/open pr`s in Git LFS issues will use
the correct link.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.github/workflows/open-pr.yml

@@ -169,7 +169,7 @@ jobs:
               const version = process.env.UPGRADE_TO_VERSION
 
               if (name === 'mintty') body = `See https://github.com/mintty/mintty/releases/tag/${version} for details.`
-              else if (name === 'mingw-w64-git-lfs') body = `See https://github.com/git-lfs/git-lfs/releases/tag/${version} for details.`
+              else if (name === 'mingw-w64-git-lfs') body = `See https://github.com/git-lfs/git-lfs/releases/tag/v${version} for details.`
               else if (name === 'mingw-w64-pcre2') body = `See https://github.com/PCRE2Project/pcre2/blob/pcre2-${version}/ChangeLog for details.`
 
               const terms = 'type:issue repo:git-for-windows/git state:open author:app/github-actions label:component-update'