[INTERNAL] sap.ui.mdc: Use double-quotes in ui5.yaml
[INTERNAL] sap.ui.mdc: Use double-quotes in ui5.yaml

To be aligned with all other ui5.yaml files.

Fixes: https://github.com/SAP/openui5/issues/3537
Change-Id: I02c6c64ecc90825a9acc8435051a62f2dc47b5ae

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5