docs: Make mute-topics.md use curl example system.

templates/zerver/api/mute-topics.md

@@ -15,13 +15,7 @@ UI, and are not included in the user's unread count totals.
 
 {tab|curl}
 
-``` curl
-curl -X PATCH {{ api_url }}/v1/users/me/subscriptions/muted_topics \
-    -u BOT_EMAIL_ADDRESS:BOT_API_KEY \
-    -d "stream=Verona"
-    -d "topic=dinner"
-    -d "op=add"
-```
+{generate_code_example(curl, exclude=["stream_id"])|/users/me/subscriptions/muted_topics:patch|example}
 
 {end_tabs}