fix(tag): move hash to sass styling only (#930)

quartz/styles/base.scss

@@ -79,6 +79,11 @@ a {
       border-radius: 0;
       padding: 0;
     }
+    &.tag-link {
+      &::before {
+        content: "#";
+      }
+    }
   }
 
   &.external .external-icon {