Fix Release Notes for 0.17.4

It appears that the list of issues fixed in Release Notes for 0.17.4 is
a straight copy of 0.17.3. A `git diff v0.17.3..v0.17.4` and a little
annotate later turned up these fixed issues instead.
Merge pull request #13050 from holmboe/relnotes-0.17.4

Fix Release Notes for 0.17.4
Space: first(second ...)

Couldn't help but to try to change the language to be more descriptive.
Space: methods(require ...)

The list of state requisites were incomplete so added a reference to
where they are better described.
More space before parens
Merge pull request #13052 from holmboe/space-before-paren

Space before paren