Update flag help text

Co-authored-by: Benjamin Wang <[email protected]>

etcdutl/etcdutl/snapshot_command.go

@@ -78,7 +78,7 @@ func NewSnapshotRestoreCommand() *cobra.Command {
 	cmd.Flags().StringVar(&restorePeerURLs, "initial-advertise-peer-urls", defaultInitialAdvertisePeerURLs, "List of this member's peer URLs to advertise to the rest of the cluster")
 	cmd.Flags().StringVar(&restoreName, "name", defaultName, "Human-readable name for this member")
 	cmd.Flags().BoolVar(&skipHashCheck, "skip-hash-check", false, "Ignore snapshot integrity hash value (required if copied from data directory)")
-	cmd.Flags().Uint64Var(&initialMmapSize, "initial-memory-map-size", initialMmapSize, "Initial memory map allocation size(bytes) for the DB. if not defined, it uses the default. Also 0 means use default")
+	cmd.Flags().Uint64Var(&initialMmapSize, "initial-memory-map-size", initialMmapSize, "Initial memory map allocation size(bytes) for the DB. It uses the default value if not defined or defined to 0")
 	cmd.Flags().Uint64Var(&revisionBump, "bump-revision", 0, "How much to increase the latest revision after restore")
 	cmd.Flags().BoolVar(&markCompacted, "mark-compacted", false, "Mark the latest revision after restore as the point of scheduled compaction (required if --bump-revision > 0, disallowed otherwise)")