trivial: fix then -> than typos in comments and documentation

- (better, more, bigger ...) then -> (...) than

Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index e621072..d012edd 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -1332,7 +1332,7 @@
 		c->vc_y = screen_info.orig_y;
 	}
 
-	/* We can't copy in more then the size of the video buffer,
+	/* We can't copy in more than the size of the video buffer,
 	 * or we'll be copying in VGA BIOS */
 
 	if (!vga_is_gfx)