Fixing some language mistakes.

docs/source/interactive/cm_keyboard.rst

@@ -5,13 +5,11 b' Some additional Codemirror keyboard shortcuts'
 
 Because each cell of the IPython notebook is powered by Codemirror,
 you can actually use a set of predetermined keyboard shortcuts to
-write and manipulate your content in an easier way.
+write and manipulate your content easily:
 
-Below, you will find a table listing the available shortcuts:
-
-=================  ==============  ===============
+=================  ==============  ==================
 Action             PC shortcut     Mac shortcut   
-=================  ==============  ===============
+=================  ==============  ==================
 newline & indent   Enter           Enter          
 toggle overwrite   Insert          Insert         
 indent             Ctrl-]          Cmd-]          
@@ -24,7 +22,7 b' redo Ctrl-Y Cmd-Y'
 go to cell start   Ctrl-Home       Cmd-Up         
 go to cell start   Alt-Up          Cmd-End        
 go to cell start   PageUp          PageUp         
-go to cell end     Ctrl-End        -              
+go to cell end     Ctrl-End        ---               
 go to cell end     Ctrl-Down       Cmd-Down       
 go to cell end     PageDown        PageDown       
 go one word left   Ctrl-Left       Alt-Left       
@@ -33,10 +31,10 b' go to line start Alt-Left Cmd-Left'
 go to line start   Home            Home           
 go to line end     Alt-Right       Cmd-Right      
 go to line end     End             End            
-del word before    Ctrl-Back       Alt-Back       
-del word after     -               Ctrl-Alt-Back  
+del word before    Ctrl-Backspace  Alt-Backspace     
+del word after     ---             Ctrl-Alt-Backspace
 del word after     Ctrl-Delete     Alt-Delete     
-=================  ==============  ===============
+=================  ==============  ==================
 
 .. note::