Fixup the docs for WriteStateForMigration

states/statemgr/migrate.go

@@ -31,7 +31,7 @@ type Migrator interface {
 	// the given file and the current file and complete the update only if
 	// that function returns nil. If force is set this may override such
 	// checks, but some backends do not support forcing and so will act
-	// as if force is always true.
+	// as if force is always false.
 	WriteStateForMigration(f *statefile.File, force bool) error
 }