Add support for ADF format (atlassian-api#1446)

Co-authored-by: Jim Ekman <jim.ekman@here.com>

Author: blejdfist

atlassian/confluence.py

@@ -37,6 +37,7 @@ def __init__(self, url, *args, **kwargs):
     @staticmethod
     def _create_body(body, representation):
         if representation not in [
+            "atlas_doc_format",
             "editor",
             "export_view",
             "view",