Update standards.rst

Added space line after if statement

Author: zomberg

contributing/code/standards.rst

@@ -68,13 +68,15 @@ example containing most features described below:
             if (true === $dummy) {
                 return;
             }
+
             if ('string' === $dummy) {
                 if ('values' === $mergedOptions['some_default']) {
                     return substr($dummy, 0, 5);
                 }
 
                 return ucwords($dummy);
             }
+
             throw new \RuntimeException(sprintf('Unrecognized dummy option "%s"', $dummy));
         }
     }