comment update

src/idl_gen_go.cpp

@@ -330,7 +330,7 @@ static void StructBuilderArgs(const StructDef &struct_def,
     if (IsStruct(field.value.type)) {
       // Generate arguments for a struct inside a struct. To ensure names
       // don't clash, and to make it obvious these arguments are constructing
-      // a nested struct, prefix the name with the struct name.
+      // a nested struct, prefix the name with the field name.
       StructBuilderArgs(*field.value.type.struct_def,
                         (nameprefix + (field.name + "_")).c_str(),
                         code_ptr);