refactor(app): 优化邮件模板

app/Http/functions.php

@@ -740,7 +740,7 @@ function combineKeyValue($data)
     // 拼接键值对
     $parts = [];
     foreach ($data as $key => $value) {
-        $parts[] = "{$key}:{$value}";
+        $parts[] = "{$value}";
     }
 
     // 用逗号连接