Fix gunicorn.conf remains to gunicorn.py

.gitignore

@@ -12,7 +12,7 @@
 fabfile.py
 *.swp
 gunicorn_config.py
-gunicorn.conf
+gunicorn.py
 netbox.log
 netbox.pid
 .DS_Store

docs/installation/3-http-daemon.md

@@ -107,7 +107,7 @@ Install gunicorn:
 # pip3 install gunicorn
 ```
 
-Copy `contrib/gunicorn.conf` to `/opt/netbox/gunicorn.conf`. We make a copy of this file to ensure that any changes to it do not get overwritten by a future upgrade.
+Copy `contrib/gunicorn.py` to `/opt/netbox/gunicorn.py`. We make a copy of this file to ensure that any changes to it do not get overwritten by a future upgrade.
 
 ```no-highlight
 # cp contrib/gunicorn.py /opt/netbox/gunicorn.py