Minor tweak to tag list (go-gitea#18295)

Slightly reduce the font size and padding in the tags table, it seemed a bit too big to me.

Author: silverwind

web_src/less/_repository.less

@@ -1978,8 +1978,12 @@
     }
 
     #tags-table {
+      .tag {
+        padding: 8px 12px;
+      }
+
       .release-tag-name {
-        font-size: 1.5rem;
+        font-size: 20px;
         font-weight: normal;
       }
     }