fix(cli): Fix docs

sphinx-argparse:
- won't show newlines due to a docutils/sphinx limitation
- can't point to a tuple create_parser function

Author: tony

docs/cli/index.md

@@ -28,6 +28,7 @@ completion
     :func: create_parser
     :prog: vcspull
     :nosubcommands:
+    :nodescription:
 
     subparser_name : @replace
         See :ref:`cli-sync`

docs/cli/sync.md

@@ -12,6 +12,7 @@
     :func: create_parser
     :prog: vcspull
     :path: sync
+    :nodescription:
 ```
 
 ## Filtering repos

src/vcspull/cli/__init__.py

@@ -30,7 +30,7 @@
 ).strip()
 
 
-def create_parser():
+def create_parser(return_subparsers: bool = False):
     parser = argparse.ArgumentParser(
         prog="vcspull",
         formatter_class=argparse.RawDescriptionHelpFormatter,
@@ -59,11 +59,13 @@ def create_parser():
     )
     create_sync_subparser(sync_parser)
 
-    return parser, sync_parser
+    if return_subparsers:
+        return parser, sync_parser
+    return parser
 
 
 def cli(args=None):
-    parser, sync_parser = create_parser()
+    parser, sync_parser = create_parser(return_subparsers=True)
     args = parser.parse_args(args)
 
     setup_logger(log=log, level=args.log_level.upper())