fix error message

_posts/2023-12-12-y-oh-y.md

@@ -92,7 +92,7 @@ Here, `error` is a function that takes an argument and just throws an exception.
 ```fsharp
 let fact0 = f (error)
 fact0 0 // returns 1
-fact0 1 // "goes Boom!"
+fact0 1 // "0 goes Boom!"
 ```
 
 Let us carefully understand why it works like this: `f error` (aka `fact0`) is a _function_ which takes a single integer argument and matches it against `0` (returning `1`), or _anything else_ (where it tries to multiply its argument with the result of `omega` invoked on the next smaller number). 
@@ -108,7 +108,7 @@ Remember that `fact0`, just like `error`, is a function that takes a single argu
 let fact1 = f fact0
 fact1 0 // returns 1
 fact1 1 // returns 1
-fact1 2 // "goes Boom!"
+fact1 2 // "0 goes Boom!"
 ```
 
 And indeed, because we're on a roll here, let's go one further:
@@ -117,7 +117,7 @@ let fact2 = f fact1
 fact2 0 // returns 1
 fact2 1 // returns 1
 fact2 2 // returns 2
-fact2 3 // "goes Boom!"
+fact2 3 // "0 goes Boom!"
 ```
 
 I encourage you to actually try this to see that it _actually_ seems to be starting to calculate the factorial. Then come back and see if this explanation of _why_ it works is reasonable: