add a comment for l2geth dependency

Author: colinlyguo

bridge-history-api/go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/pressly/goose/v3 v3.16.0
 	github.com/prometheus/client_golang v1.19.0
 	github.com/scroll-tech/da-codec v0.1.3-0.20250226072559-f8a8d3898f54
-	github.com/scroll-tech/go-ethereum v1.10.14-0.20250305084331-57148478e950
+	github.com/scroll-tech/go-ethereum v1.10.14-0.20250305084331-57148478e950 // It's a hotfix for the header hash compatibility issue, pls change this with caution
 	github.com/stretchr/testify v1.9.0
 	github.com/urfave/cli/v2 v2.25.7
 	golang.org/x/sync v0.7.0