add information on how to disable acme.sh timestamps, as journald already provides this functionality

Using-systemd-units-instead-of-cron.md

@@ -13,13 +13,21 @@ SyslogIdentifier=acme.sh
 ExecStart=/path/to/acme.sh --cron --home /path/to/acme.sh
 ```
 
-**2. Test that it works before creating the timer:**
+**2. Disable timestamps (optional):**
+
+`/path/to/acme.sh/account.conf`
+```
+NO_TIMESTAMP='1'
+```
+
+**3. Test that it works before creating the timer:**
 ```
 sudo systemctl daemon-reload
 sudo systemctl start acme_letsencrypt
+journalctl -u acme_letsencrypt.service
 ```
 
-**3. Create systemd timer unit for the service above:**
+**4. Create systemd timer unit for the service above:**
 
 `/etc/systemd/system/acme_letsencrypt.timer`
 ```
@@ -35,7 +43,7 @@ Persistent=true
 WantedBy=timers.target
 ```
 
-**4. Enable timer:**
+**5. Enable timer:**
 ```
 sudo systemctl start acme_letsencrypt.timer
 sudo systemctl enable acme_letsencrypt.timer