Add more clarifications for mkdir

that it's like `mkdir -p`

Author: zoffixznet

doc/Type/IO/Path.pod6

@@ -823,8 +823,8 @@ valid values for C<$mode>. Returns the L<IO::Path> object pointing to
 the newly created directory on success;
 L<fails|/routine/fail> with L<X::IO::Mkdir> if directory cannot be created.
 
-Creates parent directories, as needed. That is, C<mkdir "foo/bar"> will
-create C<foo> if it does not exist.
+Creates parent directories, as needed (similar to *nix utility C<mkdir> with C<-p> option).
+That is, C<mkdir "foo/bar"> will create C<foo> if it does not exist.
 
 =head2 routine rmdir