chore: update project url

cubicweb_prometheus/__pkginfo__.py

@@ -12,7 +12,7 @@
 author = "LOGILAB S.A. (Paris, FRANCE)"
 author_email = "contact@logilab.fr"
 description = "Exporting prometheus metrics"
-web = "https://forge.extranet.logilab.fr/cubicweb/cubes/%s" % distname
+web = "https://forge.extranet.logilab.fr/cubicweb/cubes/prometheus"
 
 __depends__ = {"cubicweb": ">= 3.27.0, < 3.34.0", "prometheus-client": ">= 0.10.1"}
 __recommends__ = {}