Core language: Prompt readers to add two spaces before new line

[jsms90]

Despite the fact that

over9000 powerLevel =
| if powerLevel > 9000 then "It's over 9000!!!" else "meh"

clearly has a double space before the new line, I (and a few other newbies) didn't register this and struggled briefly with:

over9000 powerLevel =
-- SYNTAX PROBLEM -------------------------------------------- repl-temp-000.elm

The = operator is reserved for defining variables. Maybe you want == instead? Or
maybe you are defining a variable, but there is whitespace before it?

Might be useful just to prompt readers to add the spaces before the new line?

[process-bot]

Thanks for the issue! Make sure it satisfies this checklist. My human colleagues will appreciate it!

Here is what to expect next, and if anyone wants to comment, keep these things in mind.

[evancz]

#51 attempts to address this in a way that I think makes more sense. If there is something visual there, people will try to put that visual thing in I think. Anyway, thanks for bringing this to my attention!