Update src/utils/utilities.jl

Co-authored-by: Gregory L. Wagner <gregory.leclaire.wagner@gmail.com>

Author: charleskawczynski

src/utils/utilities.jl

@@ -548,7 +548,7 @@ A helper function which returns `∑tendencies` when `tendency` is a
 `NullBroadcasted` and `lazy.(∑tendencies + tendency)` when `tendency` is not a
 `NullBroadcasted`.
 """
-function add_tend end
+function add_tendency end
 add_tend(∑tends, t) = lazy.(∑tends .+ t)
 add_tend(∑tends, ::NullBroadcasted) = ∑tends