lib/bitmap.c: fix spello

Fix typo/spello for whitespaces.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

lib/bitmap.c

@@ -551,7 +551,7 @@ static inline bool end_of_region(char c)
 }
 
 /*
- * The format allows commas and whitespases at the beginning
+ * The format allows commas and whitespaces at the beginning
  * of the region.
  */
 static const char *bitmap_find_region(const char *str)