update description of supporting infrastructure deployment

Signed-off-by: Dominik-Pinsel <dominik.pinsel@daimler.com>

edc-tests/src/main/resources/deployment/helm/supporting-infrastructure/README.md

@@ -35,7 +35,7 @@ Definition of DAPS from the IDS Reference architecture v3.0
 > roles (e.g., App Store or App Provider). Only if equipped with
 > such an identity, an entity is allowed to participate in the International Data Spaces
 
-Also, please note, that the Omejdn DAPS is meant as research sandbox and should not be used in productive environment.
+Also, please note, that the Omejdn DAPS is meant as research sandbox and should not be used in an productive environment.
 
 > **IMPORTANT:** Omejdn is meant to be a research sandbox in which we can (re)implement standard protocols and
 > potentially extend and modify functionality under the hood to support research projects. Use at your own