Update SSO guide

Add a required variable from #1359. Closes #1359.

guides/SSO.md

@@ -33,6 +33,7 @@ docker run -p 8080:8080 -v `pwd`/cert:/opt/cert -e AUTH_TYPE=LOGIN_FORM \
   -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTID=uhvaPKIHU4ZF8Ne4B6PGvF0hWW6OcUSB \
   -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTSECRET=YXfRjmodifiedTujnkVr7zuW9ECCAK4TcnCio-i \
   -e SPRING_SECURITY_OAUTH2_CLIENT_PROVIDER_AUTH0_ISSUER_URI=https://dev-a63ggcut.auth0.com/ \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_SCOPE=openid \
   -e TRUST_STORE=/opt/cert/ui-for-apache-kafka.p12 \
   -e TRUST_STORE_PASSWORD=123456 \
 provectuslabs/kafka-ui:latest
@@ -43,6 +44,7 @@ docker run -p 8080:8080 -v `pwd`/cert:/opt/cert -e AUTH_TYPE=OAUTH2 \
   -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTID=uhvaPKIHU4ZF8Ne4B6PGvF0hWW6OcUSB \
   -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTSECRET=YXfRjmodifiedTujnkVr7zuW9ECCAK4TcnCio-i \
   -e SPRING_SECURITY_OAUTH2_CLIENT_PROVIDER_AUTH0_ISSUER_URI=https://dev-a63ggcut.auth0.com/ \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_SCOPE=openid \
 provectuslabs/kafka-ui:latest
 ```