kunit: Spelling s/slowm/slow/

Fix a misspelling of "slow".

Link: https://lore.kernel.org/r/1f7ebf98598418914ec9f5b6d5cb8583d24a4bf0.1743089563.git.geert@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <shuah@kernel.org>

include/kunit/test.h

@@ -67,7 +67,7 @@ enum kunit_status {
 
 /*
  * Speed Attribute is stored as an enum and separated into categories of
- * speed: very_slowm, slow, and normal. These speeds are relative to
+ * speed: very_slow, slow, and normal. These speeds are relative to
  * other KUnit tests.
  *
  * Note: unset speed attribute acts as default of KUNIT_SPEED_NORMAL.