Add /go/codeshare-tooltip design doc redirect (#12637)

Author: victorsanni

firebase.json

@@ -333,6 +333,7 @@
       { "source": "/go/clean-up-not-disposed-disposables-in-ff", "destination": "https://docs.google.com/document/d/1bXannXQ8rEtfwxEVd7LDo7xiVu5-QxRoall28MIIFss", "type": 301 },
       { "source": "/go/clip-behavior", "destination": "https://docs.google.com/document/d/1gC5Di4ykTCqupD77PWpy9D8xXo0Ide5CnrH0zzVIhKo/edit", "type": 301 },
       { "source": "/go/codeshare-expansion-tile", "destination": "https://docs.google.com/document/d/1GTyEZjjTpx6fcrzOX-6kQ3phwu5UhUGLOWXJoy0yto0/edit?usp=sharing", "type": 301 },
+      { "source": "/go/codeshare-tooltip", "destination": "https://docs.google.com/document/d/1K3msJRq_Rru5hMhUYl34U0CTjM889J_xekRSGj1gSJo/edit?usp=sharing", "type": 301 },
       { "source": "/go/colorscheme-enhancements", "destination": "https://docs.google.com/document/d/1cIBW0jMRrtWVA5E0TB0qmwqSgLoVDIVPOysKYJOvH7U/edit?usp=sharing", "type": 301 },
       { "source": "/go/colorscheme-generation", "destination": "https://docs.google.com/document/d/1P7f-DGPWz6HCbwLoAruRuWtakPx4VY-e8nT_yuQ71sc/edit?usp=sharing&resourcekey=0-qxeub7yCKa_No0HlrzEk-g", "type": 301 },
       { "source": "/go/colorscheme-m3", "destination": "https://docs.google.com/document/d/1mY1ahBQEMAfsawGJMX5S34pXb7c8dHGatyotClReeas/edit#heading=h.cnnhzna3pz6d", "type": 301 },