Improve pod for lines, lines_*

[5c30]

Add additional wording for a negative count.

--

came up in libera #perl, there was confusion that "the last X lines" wasn't mentioned.

[ap]

I suggest this more concise alternative, which I think reads more clearly:

diff --git a/lib/Path/Tiny.pm b/lib/Path/Tiny.pm
index 58862e4..66faff3 100644
--- a/lib/Path/Tiny.pm
+++ b/lib/Path/Tiny.pm
@@ -1364,8 +1364,8 @@ If C<binmode> is provided, it will be set on the handle prior to reading.
 
 If a positive C<count> is provided, that many lines will be returned from the
 start of the file.  If a negative C<count> is provided, the entire file will be
-read, but only C<abs(count)> will be kept and returned.  If C<abs(count)>
-exceeds the number of lines in the file, all lines will be returned.
+read, but only the last C<abs(count)> lines will be kept and returned.
+If C<abs(count)> exceeds the number of lines in the file, all lines will be returned.

 If C<chomp> is set, any end-of-line character sequences (C<CR>, C<CRLF>, or
 C<LF>) will be removed from the lines returned.

[5c30]

Thanks, that reads much better to me, too. I'll update the PR. If merged, please consider it attributed to @ap