Revises unlink, closes #2096

Author: JJ

doc/Type/IO/Path.pod6

@@ -7,7 +7,7 @@
 =for code
 class IO::Path is Cool does IO { }
 
-The workhorse of IO operations.
+C<IO::Path> is the workhorse of IO operations.
 
 Conceptually, an C<IO::Path> object consists of a volume, a directory, and a
 basename. It supports both purely textual operations, and operations that access
@@ -1006,8 +1006,8 @@ Defined as:
     method unlink(IO::Path:D: --> True)
     sub    unlink(*@filenames --> List:D)
 
-Delete all specified ordinary files, links, or symbolic links. See L<rmdir>
-to delete directories.
+Delete all specified ordinary files, links, or symbolic links for which there
+are privileges to do so. See L<rmdir> to delete directories.
 
 The subroutine form returns the names of the files that were successfully
 deleted. The method form returns C<True> on success, or