fix formatting of `1`

diff --git a/exercises/assignment7.mdwn b/exercises/assignment7.mdwn
index 22152fe..3d21629 100644 (file)
--- a/exercises/assignment7.mdwn
+++ b/exercises/assignment7.mdwn
@@ -76,7 +76,7 @@ as a function from a type to a type. Call this type function M, and let P, Q, R,
 Recall that a monad requires a singleton function `mid : P-> MP`, and a
 composition operator `>=> : (P->MQ) -> (Q->MR) -> (P->MR)`. The type for
 the composition operator stated here corrects a typo in the class handout.
-Also, in the handout we called `mid` <b>1</b>. But now we've decided that `mid`
+Also, in the handout we called `mid` `𝟭`. But now we've decided that `mid`
 is better. (Think of it as "m" plus "identity", not as the start of "midway".)
 
 We will also move freely back and forth between using `>=>` and using `<=<` (aka `mcomp`), which