Updated distinguishable link evaluate method to pass button links

Author: chikara1608

lib/checks/color/link-in-text-block-evaluate.js

@@ -28,6 +28,10 @@ function isBlock(elm) {
 }
 
 function linkInTextBlockEvaluate(node) {
+  if(node.getAttribute('type') ==='button' || node.tagName.toLowerCase() === 'button' || node.getAttribute('role') !== 'button') {
+    return true;
+  }
+  
   var options = arguments.length > 1 && arguments[1] ? arguments[1] : {};
   if (isBlock(node)) {
     return false;