Add upstream_project_url to packit config

Packit won't work for man-pages until this issue is resolved: https://github.com/packit/packit-service/issues/1907

.packit.yaml

@@ -6,6 +6,8 @@ specfile_path: man-pages.spec
 
 # name in upstream package repository or registry (e.g. in PyPI)
 upstream_package_name: man-pages
+# This won't work until this issue is resolved: https://github.com/packit/packit-service/issues/1907
+upstream_project_url: https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git
 # downstream (Fedora) RPM package name
 downstream_package_name: man-pages
 
@@ -22,6 +24,7 @@ jobs:
     allowed_committers: ["packit", "ljavorsk", "nforro"]
     dist_git_branches:
       - fedora-latest
+      - fedora-rawhide
 
   - job: bodhi_update
     trigger: commit