message: Restore detailed documentation for unimaths.
  This fixes
diff: @@ -187,6 +187,7 @@ export class Command {
  } else {
  command.insertText = item.command
  }
  + command.detail = item.detail
  command.documentation = item.documentation ? item.documentation : '`' + item.command + '`'
  if (item.package) {
  const pkg = item.package
  