docs fix

Author: ishaan-jaff

docs/my-website/release_notes/v1.77.5-stable/index.md

@@ -61,7 +61,7 @@ pip install litellm==1.77.5
 
 Throughput increased by 54% (1,040 → 1,602 RPS, aggregated) per instance while maintaining a 40 ms median overhead. The improvement comes from fixing major O(n²) inefficiencies in the router, primarily caused by repeated use of in statements inside loops over large arrays. Tests were run with a database-only setup (no cache hits). As a result, p95 latency improved by 30% (2,700 → 1,900 ms), enhancing overall stability and scalability under heavy load.
 
-### Test Setup
+#### Test Setup
 
 All benchmarks were executed using Locust with 1,000 concurrent users and a ramp-up of 500. The environment was configured to stress the routing layer and eliminate caching as a variable.