Fix link to “add GUI” section

[dotnetCarpenter]

Changes

• Fix link to “add GUI” section on https://git-scm.com/downloads/guis

Context

The old link was 404.

[dscho]

Thank you @dotnetCarpenter ! Are there other mentions of main in the repository that equally need updating?

[dotnetCarpenter]

@dscho not sure. I’m on my phone so can’t do much. I suspect that there could be a lot of links since there is so many excluded links in the “check for broken links” task.
https://github.com/git/git-scm.com/actions/runs/13354062013/job/37294362472?pr=1945#step:11:108

but I’ll need a system with find in order to check.

[dscho]

@dotnetCarpenter heh, I was on my phone, too, but now I am on my computer and opened #1946 ;-)

[dotnetCarpenter]

@dscho according to grep there are no more references to blob/main.

# search in data/ content/ external/
grep -nr "github.com/git/git-scm.com/blob/main/" data/ content/ external/
printf "***************************\n"
grep -nr "github.com/git/git-scm.com/tree/gh-pages" data/ content/ external/

Output:

***************************
content/site/_index.html:27:    <a href="https://github.com/git/git-scm.com/tree/gh-pages?tab=MIT-1-ov-file#readme">MIT license</a>.
content/downloads/guis/_index.html:18:    <small>If you want to add another GUI tool to this list, just <a href="https://github.com/git/git-scm.com/tree/gh-pages?tab=readme-ov-file#adding-a-new-gui">follow the instructions</a>.</small>

Apparently there are only two links, to this repo, on the entire site.

[dscho]

@dotnetCarpenter thanks for verifying!