fixed dwm.1, added Mod1-Shift-c (was missing for an odd reason)

dwm.1

@@ -36,13 +36,13 @@ prints version information to standard output, then exits.
 Writing to standard input displays the text in the status text area.
 .TP
 .B Button[1-3]
-click onto a tag label focusses the specifc tag.
+click onto a tag label focuses the specifc tag.
 .TP
 .B Button[1,4]
-click focusses the previous tag.
+click focuses the previous tag.
 .TP
 .B Button[2,5]
-click focusses the next tag.
+click focuses the next tag.
 .SS Keyboard commands
 .TP
 .B Mod1-Return
@@ -90,6 +90,10 @@ Apply
 to current
 .B window.
 .TP
+.B Mod1-Shift-c
+Close focused
+.B window.
+.TP
 .B Mod1-Shift-q
 Quit
 .B dwm.