Fix #5265: Change systemctl status outputs to venv era

docs/installation/migrating-to-systemd.md

@@ -38,14 +38,14 @@ You can use the command `systemctl status netbox` to verify that the WSGI servic
 # systemctl status netbox.service
 ● netbox.service - NetBox WSGI Service
    Loaded: loaded (/etc/systemd/system/netbox.service; enabled; vendor preset: enabled)
-   Active: active (running) since Thu 2019-12-12 19:23:40 UTC; 25s ago
+   Active: active (running) since sat 2020-10-24 19:23:40 UTC; 25s ago
      Docs: https://netbox.readthedocs.io/en/stable/
  Main PID: 11993 (gunicorn)
     Tasks: 6 (limit: 2362)
    CGroup: /system.slice/netbox.service
-           ├─11993 /usr/bin/python3 /usr/local/bin/gunicorn --pid /var/tmp/netbox.pid --pythonpath /opt/netbox/...
-           ├─12015 /usr/bin/python3 /usr/local/bin/gunicorn --pid /var/tmp/netbox.pid --pythonpath /opt/netbox/...
-           ├─12016 /usr/bin/python3 /usr/local/bin/gunicorn --pid /var/tmp/netbox.pid --pythonpath /opt/netbox/...
+           ├─11993 /opt/netbox/venv/bin/python3 /opt/netbox/venv/bin/gunicorn --pid /var/tmp/netbox.pid --pythonpath /opt/netbox/...
+           ├─12015 /opt/netbox/venv/bin/python3 /opt/netbox/venv/bin/gunicorn --pid /var/tmp/netbox.pid --pythonpath /opt/netbox/...
+           ├─12016 /opt/netbox/venv/bin/python3 /opt/netbox/venv/bin/gunicorn --pid /var/tmp/netbox.pid --pythonpath /opt/netbox/...
 ...
 ```