Replace mention of now defunct .file method by de-facto .path

S03-operators.pod

@@ -2749,7 +2749,7 @@ is defined as less than a second or so.  If this is a concern, an
 explicit stat() or lstat() may be used to return an explicit C<IO>
 object that will not be subject to timeout, and may be tested
 repeatedly just as a filename or handle can.  An C<IO> object has
-a C<.file> method that can be queried for its filename (if known).
+a C<.path> method that can be queried for its path (if known).
 
 (Inadvertent use of the Perl 5 forms will normally result in treatment
 as a negated postdeclared subroutine, which is likely to produce an