tour: Functions section little mistake

[rschio]

gotour/_content/tour/eng/functions.article

Lines 59 to 61 in df52d8d

	Functions can return zero or one value (or none, in which case you can omit the
	return type). The `return` statement is used to specify the value to be returned.
	In the example above, `add` returns an integer.

I think this should be:
"Functions can return one or more values (or none, in which case you can omit the
return type)..."

[ardan-bkennedy]

Yea, I agree that language is off. Can you give me a PR for this fix against main.

[rschio]

Sure!