document that --all doesn't imply --attachments

Author: Changaco

README.rst

@@ -325,7 +325,7 @@ Gotchas / Known-issues
 All is not everything
 ---------------------
 
-The ``--all`` argument does not include: cloning private repos (``-P, --private``), cloning forks (``-F, --fork``), cloning starred repositories (``--all-starred``), ``--pull-details``, cloning LFS repositories (``--lfs``), cloning gists (``--gists``) or cloning starred gist repos (``--starred-gists``). See examples for more.
+The ``--all`` argument does not include: downloading attachments from issue and pull request comments (``--attachments``), cloning private repos (``-P, --private``), cloning forks (``-F, --fork``), cloning starred repositories (``--all-starred``), ``--pull-details``, cloning LFS repositories (``--lfs``), cloning gists (``--gists``) or cloning starred gist repos (``--starred-gists``). See examples for more.
 
 Starred repository size
 -----------------------

github_backup/github_backup.py

@@ -488,7 +488,7 @@ def parse_args(args=None):
         "--attachments",
         action="store_true",
         dest="include_attachments",
-        help="download user-attachments from issues, pull requests, and discussions",
+        help="download user-attachments from issues, pull requests, and discussions [*]",
     )
     parser.add_argument(
         "--throttle-limit",