Fix white space in url

Author: steevanb

README.md

@@ -1,6 +1,6 @@
 [![version](https://img.shields.io/badge/version-2.0.0-green.svg)](https://github.com/steevanb/php-backtrace/tree/2.0.0)
 [![php](https://img.shields.io/badge/php->=5.4-blue.svg)](http://php.net)
-![Lines](https://img.shields.io/badge/code lines-509-green.svg)
+![Lines](https://img.shields.io/badge/code%20lines-509-green.svg)
 ![Total Downloads](https://poser.pugx.org/steevanb/php-backtrace/downloads)
 [![SensionLabsInsight](https://img.shields.io/badge/SensionLabsInsight-platinum-brightgreen.svg)](https://insight.sensiolabs.com/projects/2b6dd6a0-ef48-4b5b-ba13-e825e0841be3/analyses/12)
 [![Scrutinizer](https://scrutinizer-ci.com/g/steevanb/php-backtrace/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/steevanb/php-backtrace/)