Documentation improvements

Author: amomchilov

Guides/AdjacentPairs.md

@@ -5,9 +5,6 @@
 
 Lazily iterates over tuples of adjacent elements.
 
-This operation is available for any sequence by calling the `adjacentPairs()`
-method.
-
 ```swift
 let numbers = (1...5)
 let pairs = numbers.adjacentPairs()

Guides/Grouped.md

@@ -5,18 +5,15 @@
 
 Groups up elements of a sequence into a new Dictionary, whose values are Arrays of grouped elements, each keyed by the result of the given closure.
 
-This operation is available for any sequence by calling the `grouped(by:)`
-method.
-
 ```swift
 let fruits = ["Apricot", "Banana", "Apple", "Cherry", "Avocado", "Coconut"]
 let fruitsByLetter = fruits.grouped(by: { $0.first! })
 // Results in:
-[
-    "B": ["Banana"],
-    "A": ["Apricot", "Apple", "Avocado"],
-    "C": ["Cherry", "Coconut"],
-]
+// [
+//     "B": ["Banana"],
+//     "A": ["Apricot", "Apple", "Avocado"],
+//     "C": ["Cherry", "Coconut"],
+// ]
 ```
 
 If you wish to achieve a similar effect but for single values (instead of Arrays of grouped values), see [`keyed(by:)`](Keyed.md).

Guides/Keyed.md

@@ -1,19 +1,19 @@
 # Indexed
 
-[[Source](https://github.com/apple/swift-algorithms/blob/main/Sources/Algorithms/Indexed.swift) | 
- [Tests](https://github.com/apple/swift-algorithms/blob/main/Tests/SwiftAlgorithmsTests/IndexedTests.swift)]
+[[Source](https://github.com/apple/swift-algorithms/blob/main/Sources/Algorithms/Keyed.swift) | 
+ [Tests](https://github.com/apple/swift-algorithms/blob/main/Tests/SwiftAlgorithmsTests/KeyedTests.swift)]
 
 Stores the elements of a sequence as the values of a Dictionary, keyed by the result of the given closure.
 
 ```swift
 let fruits = ["Apple", "Banana", "Cherry"]
 let fruitByLetter = fruits.keyed(by: { $0.first! })
 // Results in:
-[
-	"A": "Apple",
-	"B": "Banana",
-	"C": "Cherry",
-]
+// [
+//     "A": "Apple",
+//     "B": "Banana",
+//     "C": "Cherry",
+// ]
 ```
 
 Duplicate keys will trigger a runtime error by default. To handle this, you can provide a closure which specifies which value to keep:
@@ -25,11 +25,11 @@ let fruitsByLetter = fruits.keyed(
     uniquingKeysWith: { key, old, new in new } // Always pick the latest fruit
 )
 // Results in:
-[
-    "A": "Avocado",
-    "B": "Blackberry"],
-    "C": ["Coconut"],
-]
+// [
+//     "A": "Avocado",
+//     "B": "Blackberry"],
+//     "C": "Coconut",
+// ]
 ```
 
 ## Detailed Design