Update documentation descriptions.

Author: LemonSpike

Guides/Cycle.md

@@ -16,10 +16,6 @@ for x in (1...3).cycled(times: 3) {
 // Prints 1 through 3 three times
 ```
 
-`cycled(times:)` combines two other existing standard library functions
-(`repeatElement` and `joined`) to provide a more expressive way of repeating a
-collection's elements a limited number of times.
-
 ## Detailed Design
 
 Two new methods are added to collections:
@@ -38,7 +34,8 @@ conforms to `LazySequenceProtocol` when the base type conforms.
 
 Note that the returned `FiniteCycle` will always have `Collection`
 conformance, and will have `BidirectionalCollection` conformance
-when called on a bidirectional collection.
+when called on a bidirectional collection. `FiniteCycle` also
+conforms to `LazyCollectionProtocol` when the base type conforms.
 
 ### Complexity