fix: 移动端登录账号长度限制错误

mobile/src/locale/en.json

@@ -30,7 +30,8 @@
         "passwordPlaceholder": "Please Input Password:",
         "loginbtn": "Login",
         "pwdFmtError": "Password Must More Than 6 Characters",
-        "uOrpwdError": "Invalid Account Or Password"
+        "uOrpwdError": "Invalid Account Or Password",
+		"accFmtError": "Account Must More Than 1 Characters"
     },
     "home": {
         "tab1": "My Favorites",

mobile/src/locale/zh-Hans.json

@@ -29,7 +29,8 @@
         "password": "密码：",
         "passwordPlaceholder": "请输入密码",
         "loginbtn": "登录",
-        "pwdFmtError": "密码最短为6个字符",
+        "pwdFmtError": "密码最短为1个字符",
+		"accFmtError": "账号最短为1个字符",
         "uOrpwdError": "无效账号或密码"
     },
     "home": {

mobile/src/locale/zh-Hant.json

@@ -31,7 +31,8 @@
         "passwordPlaceholder": "請輸入密碼",
         "loginbtn": "登錄",
         "pwdFmtError": "密碼最短為6個字符",
-        "uOrpwdError": "無效賬號或密碼"
+        "uOrpwdError": "無效賬號或密碼",
+		"accFmtError": "帳號最短為1個字符"
     },
     "home": {
         "tab1": "我的收藏",

mobile/src/pages/login/index.vue

@@ -67,17 +67,17 @@
 			
 			async loginByPwd() {
 				
-				if (this.username.length < 3) {
+				if (this.username.length < 1) {
 					uni.showToast({
 						icon: 'none',
-						title: '账号最短为 3 个字符'
+						title: this.$t('login.accFmtError')
 					});
 					return;
 				}
-				if (this.password.length < 6) {
+				if (this.password.length < 1) {
 					uni.showToast({
 						icon: 'none',
-						title: this.$t('login.pwdFmtError')
+						title: this.$t('login.passwordPlaceholder')
 					});
 					return;
 				}