fix(controller): Fixed wrong error message

[dinever]

Signed-off-by: Peixuan Ding dingpeixuan911@gmail.com

When submitting a WF with an invalid PodSpecPatch:

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: pod-spec-patch-
spec:
  entrypoint: whalesay
  templates:
  - name: whalesay
    podSpecPatch: '{"container"}'
    container:
      image: docker/whalesay:latest
      command: [cowsay]
      args: ["hello world"]

The error message incorrectly states Fail to marshal the Pod spec. I believe this is a mistake. This PR fixes it.

Also changed a bunch of Fail to to Failed to in order to be more consistent with other error messages.