fix title of subsubsection to mention "second"

diff --git a/curriculum/challenge-bot.scm b/curriculum/challenge-bot.scm
index b7dd2649c3e63cc6f61660975ef3487f89e5ac14..298285cc35f47241e94f8b88123fcb23f45149a0 100644 (file)
--- a/curriculum/challenge-bot.scm
+++ b/curriculum/challenge-bot.scm
@@ -265,7 +265,7 @@
         (figure :legend "arduino to deck / keep holes far apart"
                 (image :file "arduino-to-deck/keep-holes-far-apart.png"))))
     (subsubsection
-     :title [drilling and attaching screw]
+     :title [drilling and attaching second screw]
      (p [to drill the second hole, follow the same steps as drilling the
             first hole.
             hold the arduino down as before, and drill through the hole