Add tests for blowfish cowfile

Signed-off-by: Thomas A. Christensen II <25492070+MillironX@users.noreply.github.com>

docs/src/cows.md

@@ -4,4 +4,5 @@ Examples of all the cowfiles available.
 
 ```@docs
 Cowsay.default
+Cowsay.blowfish
 ```

src/cows/blowfish.cow.jl

@@ -1,6 +1,41 @@
-##
-## Blowfish
-##
+"""
+    function blowfish()
+
+A blowfish.
+
+```jldoctest
+julia> cowsay("Bloop, bloop", cow=Cowsay.blowfish)
+ ______________
+< Bloop, bloop >
+ --------------
+   \\
+    \\
+               |    .
+           .   |L  /|
+       _ . |\\ _| \\--+._/| .
+      / ||\\| Y J  )   / |/| ./
+     J  |)'( |        ` F`.'/
+   -<|  F         __     .-<
+     | /       .-'. `.  /-. L___
+     J \\      <    \\  | | O\\|.-'
+   _J \\  .-    \\/ O | | \\  |F
+  '-F  -<_.     \\   .-'  `-' L__
+ __J  _   _.     >-'  )._.   |-'
+ `-|.'   /_.           \\_|   F
+   /.-   .                _.<
+  /'    /.'             .'  `\\
+   /L  /'   |/      _.-'-\\
+  /'J       ___.---'\\|
+    |\\  .--' V  | `. `
+    |/`. `-.     `._)
+       / .-.\\
+ VK    \\ (  `\\
+        `.\\
+
+
+
+```
+"""
 function blowfish(;eyes="oo", tongue="  ", thoughts="\\")
 the_cow =
 """