Update the "Homepage" link to be https://buildgrid.gitlab.io/buildgrid/ to...
Description
This MR changes the link for the "Homepage" to be https://buildgrid.gitlab.io/buildgrid/ rather than buildgrid.build, which has nothing there and just redirects to buildgrid.gitlab.io.
Validation
Check that the "Homepage" link takes the user straight to buildgrid.gitlab.io
This merge request, when merged, will address issue/bug:
None.