apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: print-date
  annotations:
    description: |
      A simple task that prints the date.
spec:
  results:
    - name: current-date-unix-timestamp
      description: The current date in unix timestamp format
    - name: current-date-human-readable
      description: The current date in humand readable format
  steps:
    - name: print-date-unix-timestamp
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        date +%s | tee /tekton/results/current-date-unix-timestamp
    - name: print-date-humman-readable
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        date | tee /tekton/results/current-date-human-readable

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: print-date
  annotations:
    description: |
      A simple task that prints the date.
spec:
  results:
    - name: current-date-unix-timestamp
      description: The current date in unix timestamp format
    - name: current-date-human-readable
      description: The current date in human readable format
  steps:
    - name: print-date-unix-timestamp
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        date +%s | tee /tekton/results/current-date-unix-timestamp
    - name: print-date-human-readable
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        date | tee /tekton/results/current-date-human-readable

Fix typo in Task Result Example
Fix typo in Task Result Example