docs: import mismatch

[bketelsen]

for etcd:

go: finding module for package github.com/go-micro/plugins/v5/registry/etcd
go: downloading github.com/go-micro/plugins v0.0.0-20250428091048-31adb6f301d1
go: downloading github.com/go-micro/plugins/v5/registry/etcd v1.0.2
go: found github.com/go-micro/plugins/v5/registry/etcd in github.com/go-micro/plugins/v5/registry/etcd v1.0.2
go: github.com/micro/helloworld imports
        github.com/go-micro/plugins/v5/registry/etcd: github.com/go-micro/plugins/v5/registry/etcd@v1.0.2: parsing go.mod:
        module declares its path as: github.com/micro/plugins/v5/registry/etcd
                but was required as: github.com/go-micro/plugins/v5/registry/etcd```

Check others for bad imports, too