Add :kbd: to vlc playback speed and file opening

source/2/2.5/2.5.3/vlc.rst

@@ -5,7 +5,7 @@ VLC is the default media player for Lubuntu that can open both audio and video f
 
 Useage
 ------
-To open media stored locally on your system click media open :menuselection:`media --> Open file` and navigate your local files or press control +o on the keyboard to open files stored locally on your machine. If you wish to open media from somewhere on the internet on :menuselection:`media --> open network stream` or press control + n. To open a whole directory use :menuselection:`media --> Open Directory` or press control +F.   
+To open media stored locally on your system click media open :menuselection:`media --> Open file` and navigate your local files or press :kbd:`control +o` on the keyboard to open files stored locally on your machine. If you wish to open media from somewhere on the internet on :menuselection:`media --> open network stream` or press :kbd"`control + n`. To open a whole directory use :menuselection:`media --> Open Directory` or press :kbd:`control +F`.   
 
 To pause playback of a file press the button that look like two verical lines. To resume playback press the right playback button. To toggle fullscreen press the button which has the four corners of the screen to make it fullscreen and the four screens to have it back into windowed mode. 
 
@@ -23,7 +23,7 @@ To loop the current playlist over and over press the button with an arrow pointi
 
 To randomize your playlist press the button with two crossing arrows on it. 
 
-To speed up playback faster than normal press the + key or use :menuselection:`Playback --> Speed --> Faster`. To slow down playback slower than normal press the - key :menuselection:`Playback --> Speed --> Slower`.  
+To speed up playback faster than normal press the :kbd:`+` key or use :menuselection:`Playback --> Speed --> Faster`. To slow down playback slower than normal press the :kbd:`-` key :menuselection:`Playback --> Speed --> Slower`.  
 
 Screenshot
 ----------