Add descriptions to GraphQL documentation

.rubocop_manual_todo.yml

@@ -13,7 +13,6 @@
 # WIP See https://gitlab.com/gitlab-org/gitlab/-/issues/322903
 Graphql/Descriptions:
   Exclude:
-    - 'ee/app/graphql/types/health_status_enum.rb'
     - 'ee/app/graphql/types/iteration_state_enum.rb'
     - 'ee/app/graphql/types/requirements_management/requirement_state_enum.rb'
     - 'ee/app/graphql/types/requirements_management/test_report_state_enum.rb'

doc/api/graphql/reference/index.md

@@ -14571,9 +14571,9 @@ Health status of an issue or epic.
 
 | Value | Description |
 | ----- | ----------- |
-| <a id="healthstatusatrisk"></a>`atRisk` |  |
-| <a id="healthstatusneedsattention"></a>`needsAttention` |  |
-| <a id="healthstatusontrack"></a>`onTrack` |  |
+| <a id="healthstatusatrisk"></a>`atRisk` | At risk. |
+| <a id="healthstatusneedsattention"></a>`needsAttention` | Needs attention. |
+| <a id="healthstatusontrack"></a>`onTrack` | On track. |
 
 ### `IssuableSearchableField`
 

ee/app/graphql/types/health_status_enum.rb

@@ -5,8 +5,8 @@ module Types
     graphql_name 'HealthStatus'
     description 'Health status of an issue or epic'
 
-    value 'onTrack', value: Issue.health_statuses.key(1)
-    value 'needsAttention', value: Issue.health_statuses.key(2)
-    value 'atRisk', value: Issue.health_statuses.key(3)
+    Issue.health_statuses.each do |status, val|
+      value status.camelize(:lower), description: status.humanize, value: status
+    end
   end
 end