fix repository-cache flag help description from file to directory

Signed-off-by: Maor Friedman <mafriedm@redhat.com>

pkg/cli/environment.go

@@ -156,7 +156,7 @@ func (s *EnvSettings) AddFlags(fs *pflag.FlagSet) {
 	fs.BoolVar(&s.Debug, "debug", s.Debug, "enable verbose output")
 	fs.StringVar(&s.RegistryConfig, "registry-config", s.RegistryConfig, "path to the registry config file")
 	fs.StringVar(&s.RepositoryConfig, "repository-config", s.RepositoryConfig, "path to the file containing repository names and URLs")
-	fs.StringVar(&s.RepositoryCache, "repository-cache", s.RepositoryCache, "path to the file containing cached repository indexes")
+	fs.StringVar(&s.RepositoryCache, "repository-cache", s.RepositoryCache, "path to the directory containing cached repository indexes")
 	fs.IntVar(&s.BurstLimit, "burst-limit", s.BurstLimit, "client-side default throttling limit")
 	fs.Float32Var(&s.QPS, "qps", s.QPS, "queries per second used when communicating with the Kubernetes API, not including bursting")
 }