Typo: Inconsistent Style Code Y035/Y036

Style “Defer Controller Logic” has an inconsistent style code: Y035 in the link text and Y036 in the link URL. I don’t know which of the two is more correct. This commit changes the URL to Y035 in order to keep existing links working.
Merge pull request #180 from cwalther/patch-1

Typo: Inconsistent Style Code Y035/Y036