chore: update test cmd update-strategy description to include all 4 values (semver, newest-build, alphabetical, digest) (#864)

Signed-off-by: Cheng Fang <cfang@redhat.com>

Author: chengfang

cmd/test.go

@@ -176,14 +176,14 @@ argocd-image-updater test nginx --allow-tags '^1.19.\d+(\-.*)*$' --update-strate
 	runCmd.Flags().StringVar(&semverConstraint, "semver-constraint", "", "only consider tags matching semantic version constraint")
 	runCmd.Flags().StringVar(&allowTags, "allow-tags", "", "only consider tags in registry that satisfy the match function")
 	runCmd.Flags().StringArrayVar(&ignoreTags, "ignore-tags", nil, "ignore tags in registry that match given glob pattern")
-	runCmd.Flags().StringVar(&strategy, "update-strategy", "semver", "update strategy to use, one of: semver, latest)")
+	runCmd.Flags().StringVar(&strategy, "update-strategy", "semver", "update strategy to use (one of semver, newest-build, alphabetical, digest)")
 	runCmd.Flags().StringVar(&registriesConfPath, "registries-conf-path", "", "path to registries configuration")
 	runCmd.Flags().StringVar(&logLevel, "loglevel", "debug", "log level to use (one of trace, debug, info, warn, error)")
 	runCmd.Flags().BoolVar(&disableKubernetes, "disable-kubernetes", false, "whether to disable the Kubernetes client")
 	runCmd.Flags().StringVar(&kubeConfig, "kubeconfig", "", "path to your Kubernetes client configuration")
 	runCmd.Flags().StringVar(&credentials, "credentials", "", "the credentials definition for the test (overrides registry config)")
 	runCmd.Flags().StringSliceVar(&platforms, "platforms", []string{fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH)}, "limit images to given platforms")
 	runCmd.Flags().BoolVar(&disableKubeEvents, "disable-kubernetes-events", false, "Disable kubernetes events")
-	runCmd.Flags().IntVar(&rateLimit, "rate-limit", 20, "specificy registry rate limit (overrides registry.conf)")
+	runCmd.Flags().IntVar(&rateLimit, "rate-limit", 20, "specific registry rate limit (overrides registry.conf)")
 	return runCmd
 }