fix: Fix string.title (#2687)

* fix: unsignedTypeMap type error

* fix: string.Title

* style: string.Title test

tools/goctl/util/stringx/string.go

@@ -57,7 +57,7 @@ func (s String) Title() string {
 	if s.IsEmptyOrSpace() {
 		return s.source
 	}
-	return cases.Title(language.English).String(s.source)
+	return cases.Title(language.English, cases.NoLower).String(s.source)
 }
 
 // ToCamel converts the input text into camel case

tools/goctl/util/stringx/string_test.go

@@ -54,6 +54,14 @@ func TestTitle(t *testing.T) {
 			src:  "go zero",
 			exec: "Go Zero",
 		},
+		{
+			src:  "goZero",
+			exec: "GoZero",
+		},
+		{
+			src:  "GoZero",
+			exec: "GoZero",
+		},
 		{
 			src:  "测试this is data",
 			exec: "测试This Is Data",