Add flutter.dev/go/education link (#9722)

Author: Hixie

firebase.json

@@ -313,6 +313,7 @@
       { "source": "/go/drm-embedder-metal", "destination": "https://docs.google.com/document/d/1ed0hv_0UWUyRCpRWRbv-Ff7sxMimIXwCk5kepWbNA5k/edit?usp=sharing&resourcekey=0-sCLVUBH5gQh-CvdULgkOhw", "type": 301 },
       { "source": "/go/drm-embedder-vulkan", "destination": "https://docs.google.com/document/d/1MC-2vM1eqlpnm1QFvijCzTDL8pvHpaxqNxaKnA7Soec/edit?usp=sharing", "type": 301 },
       { "source": "/go/dynamic-plugins", "destination": "https://docs.google.com/document/d/18AQCXxFrCu8UahRVy__VAQTWUnaonKtl24TUr86KkXs", "type": 301 },
+      { "source": "/go/education", "destination": "https://docs.google.com/document/d/1PG2aPAkWkJ4q6k0wKlVwo86QZ9yLlZOeMVHStzDhwp4/edit?resourcekey=0-rzmUbzd7yaIHRbgh0kqqMg", "type": 301 },
       { "source": "/go/eliminating-nullok-parameters", "destination": "https://docs.google.com/document/d/1LKBL0S1uyhACDiUXILhLKFZH8Cpl_w3mXjHgaE8_--U/edit?usp=sharing", "type": 301 },
       { "source": "/go/embedder-vulkan-support", "destination": "https://docs.google.com/document/d/1vaUkfDett2mzKIUmq6uC-7Se2NEAf4XkwKU7ISTJpQE/edit", "type": 301 },
       { "source": "/go/encoded-image-dimensions", "destination": "https://docs.google.com/document/d/18KL4CILgjwjeb6vXDsIn5U7vHGSonpgR05FqaSsvoVc/edit", "type": 301 },