Fix typo in PiHole integration guide

Author: Tweebloesem

docs/PIHOLE_GUIDE.md

@@ -1,6 +1,6 @@
 # Integration with PiHole
 
-NetAlertX comes with 2 plugins suitable for integarting with your existing PiHole instace. One plugin is using a direct SQLite DB connection, the other leverages the DHCP.leases file generated by PiHole. You can combine both approaches and also supplement it with other [plugins](/docs/PLUGINS.md). 
+NetAlertX comes with 2 plugins suitable for integrating with your existing PiHole instace. One plugin is using a direct SQLite DB connection, the other leverages the DHCP.leases file generated by PiHole. You can combine both approaches and also supplement it with other [plugins](/docs/PLUGINS.md). 
 
 ## Approach 1: `DHCPLSS` Plugin - Import devices from the PiHole DHCP leases file