How do I suggest broken link fixes to a Drupal module project page description?
Basically, you want to report documentation bug, because project page is maintained by module maintainers, and it's entry point to all other documentation.


You need to log in
Go to the module page
In the right sidebar, you will have section "Issues for [module name]"
Enter issue queue by clicking any link in this section, for example open bugs.
On the page "Issues for [module name]", click "Create a new issue"
Set the Component field to "Documentation" (unless maintainers defined better fitting component option for your purpose)
Fill all the rest as needed