Fix Typo

@@ -265,7 +265,7 @@ final list = List<User>().obs;
 ```dart
 ```dart
 Text(title.value), // String need to have .value in front of it
 Text(title.value), // String need to have .value in front of it
 ListView.builder (
 ListView.builder (
-  itemCount: list.lenght // lists don't need it
+  itemCount: list.length // lists don't need it
 )
 )
 ```
 ```
 
 

@@ -516,7 +516,7 @@ final list = List<User>().obs;
 
 
 ```dart
 ```dart
 ListView.builder (
 ListView.builder (
-  itemCount: list.lenght
+  itemCount: list.length
 )
 )
 ```
 ```
 
 

@@ -416,7 +416,7 @@ Você também não precisa usar `.value` com listas, a api dart nos permitiu rem
 final list = List<Usuario>().obs;
 final list = List<Usuario>().obs;
 
 
 ListView.builder (
 ListView.builder (
-itemCount: list.lenght
+itemCount: list.length
 )
 )
 ```
 ```