message: subscriber: `Not` is `not`, not `or`
  ## Motivation
  Doc typo.
  ## Solution
  Fix.
diff: @@ -40,11 +40,11 @@ pub struct Or<A, B, S> {
  /// If the wrapped filter would enable a span or event, it will be disabled. If
  /// it would disable a span or event, that span or event will be enabled.
  ///
  -/// This type is typically returned by the [`FilterExt::or`] method. See that
  +/// This type is typically returned by the [`FilterExt::not`] method. See that
  /// method's documentation for details.
  ///
  /// [`Filter`]: crate::subscribe::Filter
  -/// [`FilterExt::or`]: crate::filter::FilterExt::or
  +/// [`FilterExt::not`]: crate::filter::FilterExt::not
  pub struct Not<A, S> {
  a: A,
  _s: PhantomData<fn(S)>,
  