Make cannot message prettier

.github/actions/spelling/line_forbidden.patterns

@@ -10,11 +10,12 @@
 # s.b. anymore
 \bany more[,.]
 
-# s.b. `cannot` (or `can't`). See https://www.grammarly.com/blog/cannot-or-can-not/
-# Don't use `can not` when you mean `cannot`. The only time you're likely to see `can not` written as separate words is when the word `can` happens to precede some other phrase that happens to start with `not`:
-# `Can't` is a contraction of `cannot`, and it's best suited for informal writing.
-# In formal writing and where contractions are frowned upon, use `cannot`.
-# It is possible to write `can not`, but you generally find it only as part of some other construction, such as `not only . . . but also.`
+# s.b. `cannot` (or `can't`)
+# See https://www.grammarly.com/blog/cannot-or-can-not/
+# > Don't use `can not` when you mean `cannot`. The only time you're likely to see `can not` written as separate words is when the word `can` happens to precede some other phrase that happens to start with `not`.
+# > `Can't` is a contraction of `cannot`, and it's best suited for informal writing.
+# > In formal writing and where contractions are frowned upon, use `cannot`.
+# > It is possible to write `can not`, but you generally find it only as part of some other construction, such as `not only . . . but also.`
 # - if you encounter such a case, add a pattern for that case to patterns.txt.
 \b[Cc]an not\b