add back [] in hover documentation

Author: kartva

crates/ide/src/hover.rs

@@ -87,7 +87,7 @@ pub struct HoverResult {
 // Shows additional information, like the type of an expression or the documentation for a definition when "focusing" code.
 // Focusing is usually hovering with a mouse, but can also be triggered with a shortcut.
 //
-// image::https://user-images.githubusercontent.com/48062697/113020658-b5f98b80-917a-11eb-9f88-3dbc27320c95.gif
+// image::https://user-images.githubusercontent.com/48062697/113020658-b5f98b80-917a-11eb-9f88-3dbc27320c95.gif[]
 pub(crate) fn hover(
     db: &RootDatabase,
     FileRange { file_id, range }: FileRange,