fix version number in wordpress-svg-icons-plugin.php

git-svn-id: https://plugins.svn.wordpress.org/svg-vector-icon-plugin/trunk@839370 b8457f37-d9ea-0310-8a92-e5e31aec5664
fix versioning 

git-svn-id: https://plugins.svn.wordpress.org/svg-vector-icon-plugin/trunk@839373 b8457f37-d9ea-0310-8a92-e5e31aec5664