Update CHANGELOG.md

Author: mrubens

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## [3.7.2]
 
-- Fix computer use and prompt caching for OpenRouter's `anthropic:claude-3.7-sonnet:beta` (thanks @cte!)
+- Fix computer use and prompt caching for OpenRouter's `anthropic/claude-3.7-sonnet:beta` (thanks @cte!)
 - Fix sliding window calculations for Sonnet 3.7 that were causing a context window overflow (thanks @cte!)
 - Encourage diff editing more strongly in the system prompt (thanks @hannesrudolph!)