Fix clean email syntax to remove , to avoid error RFC-5321 address

htdocs/core/lib/functions.lib.php

@@ -939,7 +939,7 @@ function dol_escape_js($stringtoescape, $mode=0, $noescapebackslashn=0)
  *  @param		int			$keepb				1=Preserve b tags (otherwise, remove them)
  *  @param      int         $keepn              1=Preserve \r\n strings (otherwise, replace them with escaped value)
  *  @return     string     				 		Escaped string
- *  @see		dol_string_nohtmltag
+ *  @see		dol_string_nohtmltag, dol_string_nospecial, dol_string_unaccent
  */
 function dol_escape_htmltag($stringtoescape, $keepb=0, $keepn=0)
 {