typo

README.md

@@ -25,7 +25,7 @@ The server itself is on its own vlan (Vlan: homesrv) but requires communication
   - [Zigbee2mqtt](#zigbee2mqtt)
     - [Docker devices](#docker-devices)
 - [Proxmox - lxc container](#proxmox---lxc-container)
-- [Operation System](#operation-system)
+- [Operating System](#operating-system)
 - [Development, Maintenance and Deployment](#development-maintenance-and-deployment)
 - [Ansible roles](#ansible-roles)
   - [myInfra.dev.homesrv01.core](#myinfradevhomesrv01core)
@@ -238,7 +238,7 @@ ls -l /dev/ttyUSB0
 #lxc.mount.entry: /dev/ttyUSB0 dev/ttyUSB0 none bind,optional,create=file
 ```
 
-## Operation System
+## Operating System
 
 ```bash
 # lsb_release -a