Fix go.mod name (#7756)

diff --git a/go/go.mod b/go/go.mod
index b63eb23..ac07b0d 100644
--- a/go/go.mod
+++ b/go/go.mod
@@ -1,3 +1,3 @@
-module github.com/google/flatbuffers
+module github.com/google/flatbuffers/go
 
 go 1.19