refactor(prefer-wait-for): use ternary

Author: Belco90

lib/rules/prefer-wait-for.js

@@ -30,10 +30,9 @@ module.exports = {
           const { parent } = node;
           const [arg] = parent.arguments;
 
-          if (arg) {
-            return fixer.replaceText(node, 'waitFor');
-          }
-          return fixer.replaceText(parent, 'waitFor(() => {})');
+          return arg
+            ? fixer.replaceText(node, 'waitFor')
+            : fixer.replaceText(parent, 'waitFor(() => {})');
         },
       });
     };