Fix markdown velidation errors

docs/events/events.md

@@ -16,7 +16,6 @@ The following is a list of events you can listen to:
 | `vich_uploader.upload_error` | `Events::UPLOAD_ERROR` | If file upload failed.                   |
 | `vich_uploader.remove_error` | `Events::REMOVE_ERROR` | If file remove failed.                   |
 
-
 The `vich_uploader.pre_remove` event is cancelable, that means that the actual remove request will not take place,
 and you have to take action.
 
@@ -56,9 +55,9 @@ services:
 
 ## Error events
 
-The UPLOAD_ERROR event happens before an exception is thrown further up in the hierarchy. An error when removing a file
-will emit the event but unless you handle it somehow the error will be swallowed and the operation will preceede as if
-the file has been removed.
+The `UPLOAD_ERROR` event happens before an exception is thrown further up in the hierarchy. An error 
+when removing a file will emit the event but unless you handle it somehow the error will be swallowed and
+ the operation will preceede as if the file has been removed.
 
 You can use the event to trow an error when the error occurs:
 
@@ -90,7 +89,4 @@ class RemoveErrorEventListener implements EventSubscriberInterface
 }
 ```
 
-
-
 [Return to the index](../index.md)
-