yacht: sync (#639)

* Sync the `yacht` exercise's docs with the latest data.

* Sync the `yacht` exercise's metadata with the latest data.

exercises/practice/yacht/.docs/instructions.md

@@ -1,8 +1,12 @@
 # Instructions
 
-The dice game [Yacht][yacht] is from the same family as Poker Dice, Generala and particularly Yahtzee, of which it is a precursor.
-In the game, five dice are rolled and the result can be entered in any of twelve categories.
-The score of a throw of the dice depends on category chosen.
+Given five dice and a category, calculate the score of the dice for that category.
+
+~~~~exercism/note
+You'll always be presented with five dice.
+Each dice's value will be between one and six inclusively.
+The dice may be unordered.
+~~~~
 
 ## Scores in Yacht
 
@@ -21,15 +25,6 @@ The score of a throw of the dice depends on category chosen.
 | Choice          | Sum of the dice        | Any combination                          | 2 3 3 4 6 scores 18 |
 | Yacht           | 50 points              | All five dice showing the same face      | 4 4 4 4 4 scores 50 |
 
-If the dice do not satisfy the requirements of a category, the score is zero.
+If the dice do **not** satisfy the requirements of a category, the score is zero.
 If, for example, _Four Of A Kind_ is entered in the _Yacht_ category, zero points are scored.
 A _Yacht_ scores zero if entered in the _Full House_ category.
-
-## Task
-
-Given a list of values for five dice and a category, your solution should return the score of the dice for that category.
-If the dice do not satisfy the requirements of the category your solution should return 0.
-You can assume that five values will always be presented, and the value of each will be between one and six inclusively.
-You should not assume that the dice are ordered.
-
-[yacht]: https://en.wikipedia.org/wiki/Yacht_(dice_game)

exercises/practice/yacht/.docs/introduction.md

@@ -0,0 +1,11 @@
+# Introduction
+
+Each year, something new is "all the rage" in your high school.
+This year it is a dice game: [Yacht][yacht].
+
+The game of Yacht is from the same family as Poker Dice, Generala and particularly Yahtzee, of which it is a precursor.
+The game consists of twelve rounds.
+In each, five dice are rolled and the player chooses one of twelve categories.
+The chosen category is then used to score the throw of the dice.
+
+[yacht]: https://en.wikipedia.org/wiki/Yacht_(dice_game)

exercises/practice/yacht/.meta/config.json

@@ -17,7 +17,7 @@
       ".meta/src/reference/kotlin/Yacht.kt"
     ]
   },
-  "blurb": "Score a single throw of dice in the game Yacht",
+  "blurb": "Score a single throw of dice in the game Yacht.",
   "source": "James Kilfiger, using wikipedia",
   "source_url": "https://en.wikipedia.org/wiki/Yacht_(dice_game)"
 }