add get run under workflows api doc (#2627)

Co-authored-by: Suchintan <suchintan@users.noreply.github.com>

fern/docs.yml

@@ -161,6 +161,9 @@ navigation:
           - section: Workflows
             contents:
               - POST /v1/run/workflows
+              - GET /v1/runs/{run_id}
+              - POST /v1/runs/{run_id}/cancel
+              - POST /v1/runs/{run_id}/retry_webhook
               - GET /v1/workflows
               - POST /v1/workflows
               - POST /v1/workflows/{workflow_id}