Clarify judgement score

Clarify judgement score is between 0 and the problem's max_score.

Author: deboer-tim

Contest_API.md

@@ -1725,7 +1725,7 @@ Properties of judgement objects:
 | id                   | ID        | Identifier of the judgement.
 | submission\_id       | ID        | Identifier of the [submission](#submissions) judged.
 | judgement\_type\_id  | ID ?      | The [verdict](#judgement-types) of this judgement. Required iff judgement has completed.
-| score                | number    | Score for this judgement. Required iff contest:scoreboard\_type is `score`.
+| score                | number    | Score for this judgement, between `0` and the problem's `max_score`. Required iff contest:scoreboard\_type is `score`.
 | current              | boolean ? | `true` if this is the current judgement. Defaults to `true`. At any time, there must be at most one judgement per submission for which this `true` or unset (and thus defaulting to `true`).
 | start\_time          | TIME      | Absolute time when judgement started.
 | start\_contest\_time | RELTIME   | Contest relative time when judgement started.