[error-tracking] List possible includes in API doc (#3247)

Co-authored-by: ci.datadog-api-spec <[email protected]>

Author: api-clients-generation-pipeline[bot]

.generator/schemas/v2/openapi.yaml

@@ -449,7 +449,7 @@ components:
         type: string
     GetIssueIncludeQueryParameter:
       description: Comma-separated list of relationship objects that should be included
-        in the response.
+        in the response. Possible values are `assignee`, `case`, and `team_owners`.
       explode: false
       in: query
       name: include
@@ -996,7 +996,8 @@ components:
         $ref: '#/components/schemas/ServiceDefinitionSchemaVersions'
     SearchIssuesIncludeQueryParameter:
       description: Comma-separated list of relationship objects that should be included
-        in the response.
+        in the response. Possible values are `issue`, `issue.assignee`, `issue.case`,
+        and `issue.team_owners`.
       explode: false
       in: query
       name: include

src/main/java/com/datadog/api/client/v2/api/ErrorTrackingApi.java

@@ -192,7 +192,8 @@ public static class GetIssueOptionalParameters {
      * Set include.
      *
      * @param include Comma-separated list of relationship objects that should be included in the
-     *     response. (optional)
+     *     response. Possible values are <code>assignee</code>, <code>case</code>, and <code>
+     *     team_owners</code>. (optional)
      * @return GetIssueOptionalParameters
      */
     public GetIssueOptionalParameters include(List<GetIssueIncludeQueryParameterItem> include) {
@@ -388,7 +389,8 @@ public static class SearchIssuesOptionalParameters {
      * Set include.
      *
      * @param include Comma-separated list of relationship objects that should be included in the
-     *     response. (optional)
+     *     response. Possible values are <code>issue</code>, <code>issue.assignee</code>, <code>
+     *     issue.case</code>, and <code>issue.team_owners</code>. (optional)
      * @return SearchIssuesOptionalParameters
      */
     public SearchIssuesOptionalParameters include(