Update sample-nginx.config
Update sample-nginx.config

Removed  `ssl on`  in line 54 directive since it is deprecated and already activated with the `listen 443 ssl;`  directive in line 51
annando/friendica,friendica/friendica,annando/friendica,annando/friendica,friendica/friendica,annando/friendica,friendica/friendica,friendica/friendica,annando/friendica,friendica/friendica