Merge pull request #42250 from github/mgriffin/answered-discussion

Add answered filter and isAnswered field to the using graphql for discussions guide page

content/graphql/guides/using-the-graphql-api-for-discussions.md

@@ -15,6 +15,7 @@ This API is available for authenticated users, {% data variables.product.prodnam
 ### Repository.discussions
 
 List the discussions within a repository. If `categoryId` is specified, only results within that category will be returned.
+If `answered` is not specified, both answered and unanswered discussions will be returned.
 
 _Signature:_
 
@@ -25,6 +26,7 @@ discussions(
   first: Int,
   last: Int,
   categoryId: ID = null,
+  answered: Boolean = null,
   orderBy: DiscussionOrder = {field: UPDATED_AT, direction: DESC}
 ) : Discussion
 ```
@@ -157,6 +159,11 @@ type Discussion implements Comment & Deletable & Lockable & Node & Reactable & R
   """
   activeLockReason: LockReason
 
+  """
+  Check if this discussion has been answered
+  """
+  isAnswered: Boolean!
+
   """
   The comment chosen as this discussion's answer, if any.
   """