cue/interpreter/embed: missing help text

[myitcv]

What version of CUE are you using (cue version)?

$ cue version
cue version v0.0.0-20240703133932-f1f0963cb0f9

go version go1.22.3
      -buildmode exe
       -compiler gc
  DefaultGODEBUG httplaxcontentlength=1,httpmuxgo121=1,tls10server=1,tlsrsakex=1,tlsunsafeekm=1
     CGO_ENABLED 1
          GOARCH arm64
            GOOS linux
             vcs git
    vcs.revision f1f0963cb0f978020fc895202c50f40452da31b9
        vcs.time 2024-07-03T13:39:32Z
    vcs.modified false
cue.lang.version v0.10.0

Does this issue reproduce with the latest release?

Yes

What did you do?

cue help embed

What did you expect to see?

Some help text about embedding.

What did you see instead?

$ cue help embed
Unknown help topic: embed

[myitcv]

FYI @jpluscplusm