Typo in comment

bibtexbrowser.php

@@ -23,7 +23,7 @@ define('BIBTEXBROWSER','v__GITHUB__');
 
 // support for configuration
 // set with bibtexbrowser_configure, get with config_value
-// you may have bibtexbrowser_configure('ENCODING', 'latin1) in bibtexbrowser.local.php
+// you may have bibtexbrowser_configure('ENCODING', 'latin1') in bibtexbrowser.local.php
 global $CONFIGURATION;
 $CONFIGURATION = array();
 function bibtexbrowser_configure($key, $value) {