Edit ResetFlags and ResetCommands descriptions

command.go

@@ -875,7 +875,7 @@ Simply type ` + c.Name() + ` help [path to command] for full details.`,
 	c.AddCommand(c.helpCommand)
 }
 
-// ResetCommands used for testing.
+// ResetCommands delete parent, subcommand and help command from c.
 func (c *Command) ResetCommands() {
 	c.parent = nil
 	c.commands = nil
@@ -1271,7 +1271,7 @@ func (c *Command) PersistentFlags() *flag.FlagSet {
 	return c.pflags
 }
 
-// ResetFlags is used in testing.
+// ResetFlags deletes all flags from command.
 func (c *Command) ResetFlags() {
 	c.flagErrorBuf = new(bytes.Buffer)
 	c.flagErrorBuf.Reset()