up Catalyst doc version

Author: TorkelE

docs/Project.toml

@@ -49,7 +49,7 @@ Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 BenchmarkTools = "1.5"
 BifurcationKit = "0.4.4"
 CairoMakie = "0.12, 0.13"
-Catalyst = "14.4"
+Catalyst = "15.0"
 DataFrames = "1.6"
 DataInterpolations = "7.2, 8"
 DiffEqBase = "6.159.0"