fix systemd unit example

Author: yggverse

README.md

@@ -49,13 +49,14 @@ pulsarss --source https://path/to/feed.rss --index index.gmi
 # /etc/systemd/system/pulsarss.service
 
 [Unit]
-After=network.target
+After=network-online.target
+Wants=network-online.target
 
 [Service]
 Type=simple
 User=pulsarss
 Group=pulsarss
-ExecStart=pulsarss -s https://path/to/feed.rss -i index.gmi
+ExecStart=/usr/local/bin/pulsarss -s https://path/to/feed.rss -i index.gmi
 
 [Install]
 WantedBy=multi-user.target