Fix IngressClassParams CRD singular naming to resolve SingularConflict

  Fixes #4200

  Changes singular name from 'ingressclassparams' to 'ingressclassparam'
  to follow Kubernetes naming conventions and resolve the SingularConflict
  condition causing NamesAccepted: False status.

Author: laradji

config/crd/bases/elbv2.k8s.aws_ingressclassparams.yaml

@@ -11,7 +11,7 @@ spec:
     kind: IngressClassParams
     listKind: IngressClassParamsList
     plural: ingressclassparams
-    singular: ingressclassparams
+    singular: ingressclassparam
   scope: Cluster
   versions:
   - additionalPrinterColumns: