Fix typo

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Author: alexellis

chart/openfaas/values.yaml

@@ -20,7 +20,7 @@ createCRDs: true              # Creates the Function/Profile CRDs, set to false
 
 # basic_auth must never be disabled, and is required for all OpenFaaS components.
 # There is no good reason to disable this, and it causes a severe security risk.
-# The configuration option remains for backwards-compatability.
+# The configuration option remains for backwards-compatibility.
 basic_auth: true              # Authentication for core components, always set to true
 
 rbac: true                    # Kubernetes RBAC, no good reason to disable this