add guidance for overriding get_tags method

docs/api-guide/schemas.md

@@ -221,7 +221,7 @@ project you may adjust `settings.DEFAULT_SCHEMA_CLASS`  appropriately.
 Tags can be used to group logical operations. Each tag name in the list MUST be unique. 
 
 ---
-#### Django REST Framework generates tags automatically with following logic:
+#### Django REST Framework generates tags automatically with the following logic:
 
 1. Extract tag from `ViewSet`. 
     1. If `ViewSet` name ends with `ViewSet`, or `View`; remove it.
@@ -277,6 +277,32 @@ class MyView(APIView):
     ...
 ```
 
+If you need more customization, you can override the `get_tags` method of `AutoSchema` class. Consider the following example:
+
+```python
+from rest_framework.schemas.openapi import AutoSchema
+from rest_framework.views import APIView
+
+class MySchema(AutoSchema):
+    ...
+    def get_tags(self, path, method):
+        if method == 'POST':
+            tags = ['tag1', 'tag2']
+        elif method == 'GET':
+            tags = ['tag2', 'tag3'] 
+        elif path == '/example/path/':
+            tags = ['tag3', 'tag4']
+        else:
+            tags = ['tag5', 'tag6', 'tag7']
+    
+        return tags
+
+class MyView(APIView):
+    schema = MySchema()
+    ...
+```
+
+
 [openapi]: https://github.com/OAI/OpenAPI-Specification
 [openapi-specification-extensions]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#specification-extensions
 [openapi-operation]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject