fix: Fix documentation to have the correct endpoint (unkeyed#2726)

The setOverride was incorrectly pointing to the limit endpoint

apps/docs/api-reference/ratelimits/set-override.mdx

@@ -1,6 +1,6 @@
 ---
 title: Set Override
-openapi: post /v1/ratelimits.limit
+openapi: post /v1/ratelimits.setOverride
 ---
 
 Create or update an override to set specific limits for an identifier.