completed extend-controls docs

doc/source/handycontrol/attach/titleElement/index.md

@@ -10,7 +10,7 @@ title: TitleElement 标题元素
 | Background     | 标题背景色   |
 | Foreground     | 标题字体色   |
 | BorderBrush    | 标题边框色   |
-| TitleAlignment | 标题对齐方式 |
+| TitlePlacement | 标题对齐方式 |
 | TitleWidth     | 标题宽度     |
 
 # 使用案例
@@ -24,32 +24,32 @@ title: TitleElement 标题元素
 
 ![TitleElement.Title](https://raw.githubusercontent.com/HandyOrg/HandyOrgResource/master/HandyControl/Doc/attach/TitleElement.Title.png)
 
-## TitleAlignment 标题对齐方式
+## TitlePlacement 标题对齐方式
 
 ```xml
     <!--标题居于顶侧-->
     <hc:TextBox hc:TitleElement.Title="标题信息"
-             hc:TitleElement.TitleAlignment="Top"
+             hc:TitleElement.TitlePlacement="Top"
              Margin="10,10"></hc:TextBox>
     <!--标题居于左侧-->
     <hc:TextBox hc:TitleElement.Title="标题信息"
-             hc:TitleElement.TitleAlignment="Left"
+             hc:TitleElement.TitlePlacement="Left"
              Margin="10,10"></hc:TextBox>
 ```
 
-![TitleElement.TitleAlignment](https://raw.githubusercontent.com/HandyOrg/HandyOrgResource/master/HandyControl/Doc/attach/TitleElement.TitleAlignment.png)
+![TitleElement.TitlePlacement](https://raw.githubusercontent.com/HandyOrg/HandyOrgResource/master/HandyControl/Doc/attach/TitleElement.TitlePlacement.png)
 
 ## TitleWidth 标题宽度
 
 ```xml
         <!--设定TitleWidth为Auto-->
         <hc:TextBox hc:TitleElement.Title="标题信息"
-             hc:TitleElement.TitleAlignment="Left"
+             hc:TitleElement.TitlePlacement="Left"
              hc:TitleElement.TitleWidth="Auto"
              Margin="10,10"></hc:TextBox>
         <!--设定TitleWidth为具体数值-->
         <hc:TextBox hc:TitleElement.Title="标题信息"
-             hc:TitleElement.TitleAlignment="Left"
+             hc:TitleElement.TitlePlacement="Left"
              hc:TitleElement.TitleWidth="60"
              Margin="10,10"></hc:TextBox>
 ```