Not show social media links if they are falsy

Updates condition to now show social media links when the value is an empty string. Earlier it would check only for null which would treat empty strings as truthy

frontend/src/components/userDetail/headerProfile.js

@@ -81,7 +81,7 @@ const SocialMedia = ({ data }) => {
         </li>
       )}
       {socialMediaItems.map((i) => {
-        if (data[i] === null) {
+        if (!data[i]) {
           return null;
         }