Updated el and $el from HTMLElement to Element (#1996)

robinchow · Justineo · commit f2e727efb6b9 · 2019-02-19T00:28:42.000+08:00
As per this merged PR: vuejs/vue#8809
diff --git a/src/v2/api/index.md b/src/v2/api/index.md
@@ -698,7 +698,7 @@ type: api
 
 ### el
 
-- **类型**：`string | HTMLElement`
+- **类型**：`string | Element`
 
 - **限制**：只在由 `new` 创建的实例中遵守。
 
@@ -1314,7 +1314,7 @@ type: api
 
 ### vm.$el
 
-- **类型**：`HTMLElement`
+- **类型**：`Element`
 
 - **只读**
 
