Modify meta tag formatting in seehuhn.de

[shaqque]

Per golang/go#38205, the current meta tag at https://www.seehuhn.de/go/websocket?go-get=1 displays

<meta name="go-import" content="seehuhn.de/go/websocket git https://github.com/seehuhn/go-websocket.git">

but should instead show

<meta name="go-import" content="seehuhn.de/go/websocket git https://github.com/seehuhn/go-websocket">

following the formatting guide from go help importpath. The extra ".git" qualifier causes the links in https://pkg.go.dev/seehuhn.de/go/websocket?tab=doc to point to the wrong repo URL.

[seehuhn]

This is now fixed.