extension docs "on" line points to extension

[Hixie]

e.g. https://master-api.flutter.dev/flutter/flutter_test/TestBasicMessageChannelExtension.html

The "on" after the doc text points to the same page. I'm assuming it should say "on BasicMessageChannel" and point to that?

[lrhn]

Came here to say the same thing; https://pub.dev/documentation/ffi/latest/ffi/StringUtf8Pointer.html

[jcollins-g]

This looks like it is fixed in head, can only reproduce in the v0.45.0 tag. My guess is @srawlins fixed a problem in template resolution as part of the AOT template work.