Add /go/package-release-strategy design doc redirect (#12302)

Author: chunhtai

firebase.json

@@ -576,6 +576,7 @@
       { "source": "/go/os-adaptive-shortcut-activator", "destination": "https://docs.google.com/document/d/11NWj13MSDw1XQg4MpYIeqzcCFGuzQ_Cz7tYXW7fqzPY/edit?usp=sharing", "type": 301 },
       { "source": "/go/outline-input-border-padding-fix", "destination": "https://docs.google.com/document/d/1QBM5oM9qPWVeFSPSqpXOFbdXV9dH9A9ABKsNMs1J2XU/edit?usp=sharing", "type": 301 },
       { "source": "/go/overridable-text-actions", "destination": "https://docs.google.com/document/d/11vmEZTjB4_E4el1IjTo2VBI2d_fR7tjQWeCajsQc-q4/edit?usp=sharing", "type": 301 },
+      { "source": "/go/package-release-strategy", "destination": "https://docs.google.com/document/d/18kjoP-4LAXEllugVOQRg6vZELyD6MuxlKilLD4lFxSY/edit?usp=sharing", "type": 301 },
       { "source": "/go/performance-android-orientation-changes", "destination": "https://docs.google.com/document/d/1L7NMG8YfWXoAuCFPv9oX11M1FEWXKbyaWc03mOmXJGc/edit?usp=sharing", "type": 301 },
       { "source": "/go/performance-best-practices", "destination": "https://docs.google.com/document/d/16bd3HtkuvzAk0uizDGTT3aNtjI8Mfr0f6C3ZVrYYqvI", "type": 301 },
       { "source": "/go/permissible-slider-interaction", "destination": "https://docs.google.com/document/d/151iaqbK-rZSRI34NdkvfIk4RkzOpAevoJ87TwiXfTpM/edit?usp=sharing&resourcekey=0-o0Gx6nrgl-fpw7_zUdMaQA", "type": 301 },