update schema reference

Author: khvn26

flag_engine/context/types.py

@@ -1,5 +1,5 @@
 # generated by datamodel-codegen:
-#   filename:  https://raw.githubusercontent.com/Flagsmith/flagsmith/chore/support-str-array-for-in-condition/sdk/evaluation-context.json  # noqa: E501
+#   filename:  https://raw.githubusercontent.com/Flagsmith/flagsmith/main/sdk/evaluation-context.json  # noqa: E501
 #   timestamp: 2025-08-25T11:10:31+00:00
 
 from __future__ import annotations