message: docs: clarify CurrencyPipe display property
  Clarify how to suppress the currency/code in the CurrencyPipe by passing an empty string.
  PR Close
diff: @@ -169,6 +169,7 @@ export class CurrencyPipe implements PipeTransform {
  * For example, the Canadian dollar CAD has the symbol `CA$` and the symbol-narrow `$`. If the
  * locale has no narrow symbol, uses the standard symbol for the locale.
  * - String: Use the given string value instead of a code or a symbol.
  + * For example, an empty string will suppress the currency & symbol.
  * - Boolean (marked deprecated in v5): `true` for symbol and false for `code`.
  *
  * @param digitsInfo Decimal representation options, specified by a string
  