feat(site): change default output format to json

Author: mrrobot47

src/helper/class-ee-site.php

@@ -1733,7 +1733,7 @@ public function ssl_verify( $args = [], $assoc_args = [], $www_or_non_www = fals
 	 * [--format=<format>]
 	 * : Render output in a particular format.
 	 * ---
-	 * default: table
+	 * default: json
 	 * options:
 	 *   - table
 	 *   - csv