i3bar: spelling fixes

i3bar/include/xcb.h

@@ -65,14 +65,14 @@ void init_xcb_late(char *fontname);
 void init_colors(const struct xcb_color_strings_t *colors);
 
 /*
- * Cleanup the xcb-stuff.
+ * Cleanup the xcb stuff.
  * Called once, before the program terminates.
  *
  */
 void clean_xcb(void);
 
 /*
- * Get the earlier requested atoms and save them in the prepared data-structure
+ * Get the earlier requested atoms and save them in the prepared data structure
  *
  */
 void get_atoms(void);
@@ -104,7 +104,7 @@ void init_tray_colors(void);
 void destroy_window(i3_output *output);
 
 /*
- * Reallocate the statusline-buffer
+ * Reallocate the statusline buffer
  *
  */
 void realloc_sl_buffer(void);