fix(cli): templating arguments getops (#2280)

The `templating` CLI parameter requires an argument for the template to use, but this cannot be passed since the `getops` definition is missing the `=` sign.

Co-authored-by: Liam Newman <[email protected]>

python/jsbeautifier/__init__.py

@@ -190,7 +190,7 @@ def main():
                 "space-in-empty-paren",
                 "space-in-paren",
                 "stdin",
-                "templating",
+                "templating=",
                 "unescape-strings",
                 "usage",
                 "version",