docs: fix documentation actions

Package was initialized with `cowsay` and needed revised to use a module
name of `Cowsay` and a function name of `cowsay`

    Thomas A. Christensen II <25492070+MillironX@users.noreply.github.com>

.github/workflows/CI.yml

@@ -55,9 +55,9 @@ jobs:
       - run: |
           julia --project=docs -e '
             using Documenter: DocMeta, doctest
-            using cowsay
+            using Cowsay
-            DocMeta.setdocmeta!(cowsay, :DocTestSetup, :(using cowsay); recursive=true)
+            DocMeta.setdocmeta!(Cowsay, :DocTestSetup, :(using Cowsay); recursive=true)
-            doctest(cowsay)'
+            doctest(Cowsay)'
       - run: julia --project=docs docs/make.jl
         env:
           JULIA_PKG_SERVER: ""