Following instructions in documentation doesn't work

Hello there. I was following along with DOCUMENTATION.md, and tried putting the following into a file hello.fm:

import Base#

main : Output
  print("Hello, world!")

Then ran:

➜  helloworld fm hello/main
[PARSE-ERROR]
Attempted to re-define 'main', which is already defined as:
- Parse#x39s/main

I noticed the problem on line 4, col 24, file hello.fm:

   1| import Base#
   2|
   3| main : Output
   4|   print("Hello, world!")
   5|

But it could have happened a little earlier.
My parse-robot brain isn't perfect, sorry.

This produces the error message shown above. Is the documentation out of date?

HigherOrderCO / Kind

Following instructions in documentation doesn't work #42