gitea: fix configmap typo

Kustomization reconciliation failed: ConfigMap/stackspout/stackspin-gitea-values dry-run failed, error: failed to create typed patch object (stackspout/stackspin-gitea-values; /v1, Kind=ConfigMap): .data.values.yaml: expected string, got &value.valueUnstructured{Value:map[string]interface {}{"ingress":map[string]interface {}{"annotations":map[string]interface {}{"kubernetes.io/tls-acme":"true"}, "enabled":true, "hosts":[]interface {}{map[string]interface {}{"host":"dev.${domain}", "paths":[]interface {}{map[string]interface {}{"path":"/", "pathType":"Prefix"}}}}, "tls":[]interface {}{map[string]interface {}{"hosts":[]interface {}{"dev.${domain}"}, "secretName":"gitea-tls"}}}}}