api docs: Move OpenAPI files to zerver/openapi.

zerver/lib/bugdown/api_arguments_table_generator.py

@@ -16,6 +16,8 @@ class MarkdownArgumentsTableGenerator(Extension):
             configs = {}
         self.config = {
             'base_path': ['.', 'Default location from which to evaluate relative paths for the JSON files.'],
+            'openapi_path': ['../../../zerver/openapi',
+                             'Default location from which to evaluate relative paths for the YAML files.']
         }
         for key, value in configs.items():
             self.setConfig(key, value)

zerver/templatetags/app_filters.py

@@ -96,7 +96,8 @@ def render_markdown_path(markdown_file_path: str, context: Optional[Dict[Any, An
             ),
             zerver.lib.bugdown.fenced_code.makeExtension(),
             zerver.lib.bugdown.api_arguments_table_generator.makeExtension(
-                base_path='templates/zerver/api/'),
+                base_path='templates/zerver/api/',
+                openapi_path='zerver/openapi'),
             zerver.lib.bugdown.api_code_examples.makeExtension(),
             zerver.lib.bugdown.help_settings_links.makeExtension(),
         ]