[📖] Algolia search doesn't find plugin.ts

[wmertens]

Suggestion

When trying to find documentation on the plugin@ naming of qwik-city middleware plugins, typing "plugin" doesn't show it. Neither does "plugins". You need to type "plugin.ts" and only then it will find https://qwik.builder.io/docs/advanced/routing/#plugints

[mhevery]

Nice find, do you want to take a crack at fixing it?