update doc for tooltip's enterable

Author: kener

doc/doc-en.html

@@ -1565,6 +1565,12 @@ <h4>tooltip<a name="Tooltip"> </a></h4>
                             <td> 0.4 </td>
                             <td> The duration in seconds of the animated transition. If you want the tooltip to follow the mouse as it moves across a point or chart, setting showDelay to 0 is the key, but setting transitionDuration to 0 can also make a difference in interactive experiences. </td>
                         </tr>
+
+                        <tr>
+                            <td> <b>{boolean}</b> enterable </td>
+                            <td> false </td>
+                            <td> Specifies whether to let the mouse go into the tip dom, default to false. Let it be true if you need interaction like link | button etc. </td>
+                        </tr>
                         <tr>
                             <td> <b>{color}</b> backgroundColor </td>
                             <td> 'rgba(0,0,0,0.7)' </td>

doc/doc.html

@@ -1565,6 +1565,11 @@ <h4>tooltip<a name="Tooltip"> </a></h4>
                             <td> 0.4 </td>
                             <td> 动画变换时长，单位s，如果你希望tooltip的跟随实时响应，showDelay设置为0是关键，同时transitionDuration设0也会有交互体验上的差别。 </td>
                         </tr>
+                        <tr>
+                            <td> <b>{boolean}</b> enterable </td>
+                            <td> false </td>
+                            <td> 鼠标是否可进入详情气泡中，默认为false，如需详情内交互，如添加链接，按钮，可设置为true。 </td>
+                        </tr>
                         <tr>
                             <td> <b>{color}</b> backgroundColor </td>
                             <td> 'rgba(0,0,0,0.7)' </td>