chore(ios): fixup links for keyboard search to /go/ios/

[mcdurdin]

keyman/ios/engine/KMEI/KeymanEngine/Classes/UniversalLinks.swift

Lines 31 to 32 in 593aa14

	// e.g. https://keyman-staging.com/go/windows/14.0/download-keyboards?version=14.0.146.0
	private static let KEYBOARD_MATCH_GO_REGEX = try! NSRegularExpression(pattern: "^http(?:s)?://keyman(?:-staging)?\\.com(?:\\.localhost)?/go/windows/[^/]+/download-keyboards")

Aside - shouldn't these be /go/ios/...?

Originally posted by @darcywong00 in #15963 (comment)