Merge branch '335939-update-milestone-upcoming-filter-docs' into 'master'

MilestoneWildcardIdEnum upcoming description matches behavior

See merge request gitlab-org/gitlab!70536

app/graphql/types/milestone_wildcard_id_enum.rb

@@ -8,6 +8,6 @@ module Types
     value 'NONE', 'No milestone is assigned.'
     value 'ANY', 'Milestone is assigned.'
     value 'STARTED', 'Milestone assigned is open and started (start date <= today).'
-    value 'UPCOMING', 'Milestone assigned is due closest in the future (due date > today).'
+    value 'UPCOMING', 'Milestone assigned is due in the future (due date > today).'
   end
 end

doc/api/graphql/reference/index.md

@@ -16013,7 +16013,7 @@ Milestone ID wildcard values.
 | <a id="milestonewildcardidany"></a>`ANY` | Milestone is assigned. |
 | <a id="milestonewildcardidnone"></a>`NONE` | No milestone is assigned. |
 | <a id="milestonewildcardidstarted"></a>`STARTED` | Milestone assigned is open and started (start date <= today). |
-| <a id="milestonewildcardidupcoming"></a>`UPCOMING` | Milestone assigned is due closest in the future (due date > today). |
+| <a id="milestonewildcardidupcoming"></a>`UPCOMING` | Milestone assigned is due in the future (due date > today). |
 
 ### `MoveType`