Update highlighter.md

doc/en/highlighter.md

@@ -2,22 +2,28 @@ Since version 3.17, FeedMe supports highlighter label similar to Inoreader. High
 
 ### Set
 - Added `Highlighter` above `All Items` on the nav side
+
 <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_1.png" width="25%" height="25%" />
 
 - Click `Highlighter` to enter the Highlighter interface
 - Click the Add button to add tags you are interested in
 - Click the newly added label to change the color
+
 <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_7.png" width="25%" height="25%" /> <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_8.png" width="25%" height="25%" />
 
 - Click the checkbox to display it in the nav side (because the sidebar display requires additional calculations, due to performance considerations, up to *5* can be displayed)
+
 <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_2.png" width="25%" height="25%" />
 
 - Click the delete button to delete this table
+
 <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_3.png" width="25%" height="25%" />
 
 ### Use highlighter label
 - After returning to the nav side, click the arrow on the left of `Highlighter` to expand, and you can see the label which checkbox is checked
+
 <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_4.png" width="25%" height="25%" />
 
 - Browse lists and articles, all highlighter labels will be highlighted
+
 <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_5.png" width="25%" height="25%" /> <img src="https://github.com/seazon/FeedMe/blob/master/doc/en/imgs/highlighter_6.png" width="25%" height="25%" />