Merge pull request #18130 from WestLangley/dev_docs_arrow_helper

Docs: ArrowHelper clean up

docs/api/en/helpers/ArrowHelper.html

@@ -46,8 +46,7 @@
 		[page:Vector3 origin] -- Point at which the arrow starts.<br />
 		[page:Number length] -- length of the arrow. Default is *1*.<br />
 		[page:Number hex] -- hexadecimal value to define color. Default is 0xffff00.<br />
-		[page:Number headLength] -- The length of the head of the arrow. Default is 0.2 * length.<br />
-		[page:Number headWidth] -- The length of the width of the arrow. Default is 0.2 * headLength.
+		[page:Number headWidth] -- The width of the head of the arrow. Default is 0.2 * headLength.<br />
 		</p>
 
 		<h2>Properties</h2>
@@ -79,7 +78,7 @@
 		<p>
 		length -- The desired length.<br />
 		headLength -- The length of the head of the arrow.<br />
-		headWidth -- The length of the width of the arrow.<br /><br />
+		headWidth -- The width of the head of the arrow.<br /><br />
 
 		Sets the length of the arrowhelper.
 		</p>

docs/api/zh/helpers/ArrowHelper.html

@@ -47,7 +47,8 @@
 		[page:Number length] -- 箭头的长度. 默认为 *1*.<br />
 		[page:Number hex] -- 定义的16进制颜色值. 默认为 0xffff00.<br />
 		[page:Number headLength] -- 箭头头部(锥体)的长度. 默认为箭头长度的0.2倍(0.2 * length).<br />
-		[page:Number headWidth] -- 箭头的宽度. 默认为箭头头部(锥体)长度的0.2倍(0.2 * headLength).
+		[page:Number headWidth] -- 箭头的宽度. 默认为箭头头部(锥体)长度的0.2倍(0.2 * headLength).<br />
+		[page:Number headWidth] -- The width of the head of the arrow. Default is 0.2 * headLength.
 		</p>
 
 		<h2>属性</h2>
@@ -78,7 +79,8 @@
 		<p>
 		length -- 要设置的长度.<br />
 		headLength -- 要设置的箭头头部(锥体)的长度.<br />
-		headWidth -- 要设置的箭头的宽度.<br /><br />
+		headWidth -- 要设置的箭头的宽度.<br />
+		headWidth -- The width of the head of the arrow.<br /><br />
 
 		设置箭头辅助对象的长度.
 		</p>