Remove global options from topic tags

Appending a global options section to topic tags
help pages caused sphinx hierarchy rule violations
in the config-vars help command. This commit fixes the
bug by removing global options from topic tags.
The removal doesn't cause any meaningful loss of
information since topic tags don't make use of
the global options.

.changes/next-release/bugfix-docs-61070.json

@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "docs",
+  "description": "Fixes `#7338 <https://github.com/aws/aws-cli/issues/7338>`__. Remove global options from topic tags."
+}

awscli/clidocs.py

@@ -655,6 +655,9 @@ def doc_options_start(self, help_command, **kwargs):
     def doc_options_end(self, help_command, **kwargs):
         pass
 
+    def doc_global_option(self, help_command, **kwargs):
+        pass
+
     def doc_subitems_start(self, help_command, **kwargs):
         doc = help_command.doc
         doc.style.h2('Available Topics')

tests/unit/test_clidocs.py

@@ -652,6 +652,11 @@ def test_description_tags_in_body(self):
         contents = self.cmd.doc.getvalue().decode('utf-8')
         self.assertIn(ref_body, contents)
 
+    def test_excludes_global_options(self):
+        self.doc_handler.doc_global_option(self.cmd)
+        global_options = self.cmd.doc.getvalue().decode('utf-8')
+        self.assertNotIn('Global Options', global_options)
+
 
 class TestGlobalOptionsDocumenter(unittest.TestCase):
     def create_help_command(self):