docs: Make get-stream-topics use curl example system.

templates/zerver/api/get-stream-topics.md

@@ -31,10 +31,7 @@ zulip(config).then((client) => {
 
 {tab|curl}
 
-``` curl
-curl -X GET {{ api_url }}/v1/users/me/{stream_id}/topics \
-    -u BOT_EMAIL_ADDRESS:BOT_API_KEY
-```
+{generate_code_example(curl)|/users/me/{stream_id}/topics:get|example}
 
 {end_tabs}
 

zerver/openapi/test_curl_examples.py

@@ -21,6 +21,7 @@ exclude_list = [
     'mark-as-read-bulk.md',
     'update-subscription-properties.md',
     'remove-subscriptions.md',
+    'get-stream-topics.md',
 ]
 
 def test_generated_curl_examples_for_success(client: Client) -> None: