[Main branch] Wrong Nginx configuration at docker-compose.yaml.configure

The volume allocation for the Angular files points to a wrong directory:

Currently, - ../../org.etsi.osl.tmf.web/dist/io-openslice-portal-web:/webstatic/services

Must be changed to: - ../../org.etsi.osl.tmf.web/dist/org.etsi.osl.tmf.web:/webstatic/services