unison/unison-src/transcripts/fix2970.output.md

Also fixes #1519 (it's the same issue).

scratch/main> builtins.merge

  Done.

foo.+.doc : Nat
foo.+.doc = 10

  Loading changes detected in scratch.u.

  I found and typechecked these definitions in scratch.u. If you
  do an `add` or `update`, here's how your codebase would
  change:
  
    ⍟ These new definitions are ok to `add`:
    
      foo.+.doc : Nat