message: fix: make random doc report half open ranges as return value
diff: @@ -379,8 +379,9 @@ SYNOPSIS
  DESCRIPTION
  random generates a pseudo-random integer. IT IS NOT SECURE.
  - The range depends on what arguments you pass. If no arguments are given the range is [0, 32767].
  - If two arguments are given the range is [START, END].
  + The range is half open and depends on what arguments you pass.
  + If no arguments are given the range is [0, 32767).
  + If two arguments are given the range is [START, END).
  ```
  ## read - read a line of input into some variables
  