Fix comment.

func init() {

	// Most Android source files are not clang-tidy clean yet.

	// Default global tidy checks must exclude all checks that

	// have found too many warnings.

	// have found too many false positives.

	pctx.VariableFunc("TidyDefaultGlobalChecks", func(ctx android.PackageVarContext) string {

		if override := ctx.Config().Getenv("DEFAULT_GLOBAL_TIDY_CHECKS"); override != "" {

			return override