message: Tweak help message for storage classes
diff: @@ -136,7 +136,7 @@ class StorageClassDropdown_ extends React.Component<StorageClassDropdownProps, S
  menuClassName="dropdown-menu--text-wrap"
  />
  <p className="help-block" id={describedBy}>
  - Optional storage class for the new claim.
  + Storage class for the new claim.
  </p>
  </div>
  }
  