style: format code

lib/RegisterPage.dart

@@ -126,7 +126,7 @@ class _RegisterPageState extends State<RegisterPage> {
     String password = _passwordController.text;
     String code = _codeController.text;
 
-    if (name == ''){
+    if (name == '') {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('用戶姓名不可為空')),
       );
@@ -134,7 +134,7 @@ class _RegisterPageState extends State<RegisterPage> {
       return false;
     }
 
-    if (email == ''){
+    if (email == '') {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('電子信箱不可為空')),
       );
@@ -142,7 +142,7 @@ class _RegisterPageState extends State<RegisterPage> {
       return false;
     }
 
-    if (password== ''){
+    if (password == '') {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('密碼不可為空')),
       );
@@ -150,7 +150,7 @@ class _RegisterPageState extends State<RegisterPage> {
       return false;
     }
 
-    if (code != _generatedCode){
+    if (code != _generatedCode) {
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('驗證碼錯誤')),
       );
@@ -208,7 +208,7 @@ class _RegisterPageState extends State<RegisterPage> {
     } catch (e) {
       print('資料庫錯誤: $e');
       ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text('登入失敗：系統錯誤')),
+        SnackBar(content: Text('註冊失敗：系統錯誤')),
       );
     } finally {
       await conn.close();
@@ -288,7 +288,7 @@ class _RegisterPageState extends State<RegisterPage> {
                             : Icons.visibility_off),
                         onPressed: () {
                           setState(
-                                () {
+                            () {
                               _passwordNotVisible = !_passwordNotVisible;
                             },
                           );