typo: fix typo in example config file

example/beaver.yml

@@ -2,7 +2,7 @@
 kind: Config
 spec:
   # Global variables:
-  # - Can be accumulated/overwriten over beaver config files
+  # - Can be accumulated/overwritten over beaver config files
   variables:
   - name: VAULT_KV
     value: cnpp.k8s.cloudcrane.io

runner/fixtures/beaver.yml

 apiVersion: beaver.cloudcrane.io/v1alpha0
 kind: Config
 spec:
-  # Global variables:
-  # - Can be accumulated/overwriten over beaver config files
   variables:
   - name: VAULT_KV
     value: cnpp.k8s.cloudcrane.io