Apply improvements suggested by the linter

Apply improvements suggested by the linter · maxcnunes/gaper@586c834

Original file line number	Diff line number	Diff line change
`@@ -71,7 +71,8 @@ func Run(cfg *Config, chOSSiginal chan os.Signal) error {`
`71`	`71`	`return run(cfg, chOSSiginal, builder, runner, watcher)`
`72`	`72`	`}`
`73`	`73`
`74`		`-func run(cfg *Config, chOSSiginal chan os.Signal, builder Builder, runner Runner, watcher Watcher) error { // nolint: gocyclo`
	`74`	`+// nolint: gocyclo`
	`75`	`+func run(cfg *Config, chOSSiginal chan os.Signal, builder Builder, runner Runner, watcher Watcher) error {`
`75`	`76`	`if err := builder.Build(); err != nil {`
`76`	`77`	`return fmt.Errorf("build error: %v", err)`
`77`	`78`	`}`