Grammar mistakes in the README file
Grammar mistakes in the README file

The purpose of this pull request is to fix minor grammer mistakes in the README file.

All mistakes were present in the form of missing commas.

Resolves #13087
keycloak/keycloak,jpkrohling/keycloak,mhajas/keycloak,mhajas/keycloak,raehalme/keycloak,srose/keycloak,abstractj/keycloak,jpkrohling/keycloak,raehalme/keycloak,keycloak/keycloak,hmlnarik/keycloak,srose/keycloak,hmlnarik/keycloak,stianst/keycloak,keycloak/keycloak,mhajas/keycloak,hmlnarik/keycloak,hmlnarik/keycloak,raehalme/keycloak,reneploetz/keycloak,abstractj/keycloak,stianst/keycloak,jpkrohling/keycloak,srose/keycloak,jpkrohling/keycloak,stianst/keycloak,srose/keycloak,raehalme/keycloak,reneploetz/keycloak,abstractj/keycloak,reneploetz/keycloak,jpkrohling/keycloak,reneploetz/keycloak,keycloak/keycloak,abstractj/keycloak,srose/keycloak,hmlnarik/keycloak,stianst/keycloak,mhajas/keycloak,reneploetz/keycloak,hmlnarik/keycloak,mhajas/keycloak,abstractj/keycloak,keycloak/keycloak,stianst/keycloak,raehalme/keycloak,raehalme/keycloak