Update sTex mode for windows build

Author: jackycute

release.cmd

@@ -45,6 +45,7 @@ mode\python\python.js ^
 mode\shell\shell.js ^
 mode\php\php.js ^
 mode\sas\sas.js ^
+mode\stex\stex.js ^
 mode\sql\sql.js ^
 mode\haskell\haskell.js ^
 mode\coffeescript\coffeescript.js ^