Add links to signatures on PyPI project page

 $var title: Links for $project
 
 $for package in packages:
-    <a href="/projects/$package['name']/releases/$package['filename']\
-    #sha256=$package['sha256_digest']" data-gpg-sig=true>$package['filename']</a><br>
+    $ path = f"/projects/{package['name']}/releases/{package['filename']}"
+    <a href="$path#sha256=$package['sha256_digest']"
+    data-gpg-sig=true>$package['filename']</a>
+    <small><a href=$(path).asc>sig</a></small><br>