upate string slice usage

Signed-off-by: Victor Vieux <victorvieux@gmail.com>

flag.go

@@ -124,7 +124,7 @@ type StringSliceFlag struct {
 func (f StringSliceFlag) String() string {
 	firstName := strings.Trim(strings.Split(f.Name, ",")[0], " ")
 	pref := prefixFor(firstName)
-	return withEnvHint(f.EnvVar, fmt.Sprintf("%s [%v]\t%v", prefixedNames(f.Name), pref+firstName+" option "+pref+firstName+" option", f.Usage))
+	return withEnvHint(f.EnvVar, fmt.Sprintf("%s [%v]\t%v", prefixedNames(f.Name), pref+firstName+" ...", f.Usage))
 }
 
 func (f StringSliceFlag) Apply(set *flag.FlagSet) {

flag_test.go

@@ -75,22 +75,22 @@ var stringSliceFlagTests = []struct {
 		s := &cli.StringSlice{}
 		s.Set("")
 		return s
-	}(), "--help [--help option --help option]\t"},
+	}(), "--help [--help ...]\t"},
 	{"h", func() *cli.StringSlice {
 		s := &cli.StringSlice{}
 		s.Set("")
 		return s
-	}(), "-h [-h option -h option]\t"},
+	}(), "-h [-h ...]\t"},
 	{"h", func() *cli.StringSlice {
 		s := &cli.StringSlice{}
 		s.Set("")
 		return s
-	}(), "-h [-h option -h option]\t"},
+	}(), "-h [-h ...]\t"},
 	{"test", func() *cli.StringSlice {
 		s := &cli.StringSlice{}
 		s.Set("Something")
 		return s
-	}(), "--test [--test option --test option]\t"},
+	}(), "--test [--test ...]\t"},
 }
 
 func TestStringSliceFlagHelpOutput(t *testing.T) {