Better padding for button-links

packages/@uppy/core/src/_common.scss

@@ -170,15 +170,14 @@
 .uppy-c-btn-link {
   font-size: 14px;
   line-height: 1;
-  padding: 10px 18px;
+  padding: 10px 15px;
   border-radius: 4px;
   background-color: transparent;
   color: $color-black;
 }
 
   .uppy-size--md .uppy-c-btn-link {
-    padding: 13px 22px;
-    // border-radius: 4px;
+    padding: 13px 15px;
   }
 
   .uppy-c-btn-link:hover {