message: Explain isSmall proper for CountryDropdown
diff: @@ -42,7 +42,7 @@ function countryMatchesSearchQuery(query: string, country: PhoneNumberCountryDef
  interface IProps {
  value?: string;
  onOptionChange: (country: PhoneNumberCountryDefinition) => void;
  - isSmall: boolean;
  + isSmall: boolean; // if isSmall, show +44 in the selected value
  showPrefix: boolean;
  className?: string;
  disabled?: boolean;
  