Use css padding for author urls to fix underline hover state (#2472)

* Use scss padding for sidebar author urls

* rename .text to .label

_sass/minimal-mistakes/_sidebar.scss

@@ -194,6 +194,12 @@
     }
   }
 
+  .author__urls {
+    span.label {
+      padding-left: 5px;
+    }
+  }
+
   @include breakpoint($large) {
     display: block;
   }