Report plugin links to update_all with a hard-coded branch name

[Jackenmen]

Here's an example:
https://gist.github.com/jack1142/4a1ffb06ffe2a5216cb65b16ebe279df

It works fine because I used GitHub's rename feature and therefore have a redirect from master to main but this wouldn't work for new repositories or people who didn't use this feature.

[majkinetor]

And that is the reason why you shouldn't rename master to main ever....

Its easy to add markdown parameter branch but I wont do it since I couldn't care less :) Feel free to do it if that troubles you.