fix(docs): remove links to no-longer-exist section (#968)

Author: georgeh0

docs/docs/query.mdx

@@ -37,7 +37,7 @@ In this case, you can:
 <Tabs>
 <TabItem value="python" label="Python">
 
-The [quickstart](getting_started/quickstart#step-41-extract-common-transformations) shows an example:
+For example, based on the flow in [quickstart](getting_started/quickstart), you can extract the invocation of `SentenceTransformerEmbed` into a standalone function:
 
 ```python
 @cocoindex.transform_flow()