Update Apple documentation link

Signed-off-by: Stephen Celis <stephen@stephencelis.com>

Author: stephencelis

Documentation/Index.md

@@ -662,7 +662,7 @@ users.filter(verified || balance >= 10_000)
 
 We can build our own boolean expressions by using one of the many [filter operators and functions](#filter-operators-and-functions).
 
-> _Note:_ SQLite.swift defines `filter` instead of `where` because `where` is [a reserved keyword](https://developer.apple.com/library/ios/documentation/swift/conceptual/Swift_Programming_Language/LexicalStructure.html#//apple_ref/doc/uid/TP40014097-CH30-XID_906).
+> _Note:_ SQLite.swift defines `filter` instead of `where` because `where` is [a reserved keyword](https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/LexicalStructure.html#//apple_ref/doc/uid/TP40014097-CH30-ID413).
 
 
 ##### Filter Operators and Functions