clean up redirect from join.fp.o to docs/join

previously the redirect from join.fedoraproject.org pointed to the old
join page on the wiki, which in turn re-directed to the final (correct)
destination of https://docs.fedoraproject.org/en-US/project/join/

This commit sets the redirect from join.fp.o to the docs site, skipping
the wiki altogether.

Resolves: https://pagure.io/fedora-infrastructure/issue/10363

Signed-off-by: Ryan Lerch <rlerch@redhat.com>

playbooks/include/proxies-redirects.yml

@@ -254,7 +254,8 @@
   - role: httpd/redirect
     shortname: join-fedora
     website: join.fedoraproject.org
-    target: https://fedoraproject.org/wiki/Join
+    target: https://docs.fedoraproject.org/en-US/project/join/
+    tags: join-fedora
 
   - role: httpd/redirect
     shortname: get-help