Merge pull request #175 from v-sazhin/patch-1

Update LinkConverter.php

Author: colinodell

src/Converter/LinkConverter.php

@@ -24,6 +24,9 @@ public function convert(ElementInterface $element)
         } elseif ($href === 'mailto:' . $text && $this->isValidEmail($text)) {
             $markdown = '<' . $text . '>';
         } else {
+            if (stristr($href, ' ')) {
+                $href = '<'.$href.'>';
+            }
             $markdown = '[' . $text . '](' . $href . ')';
         }