Update perlunicook.pod fixing grammatical error

[jidanni]

We fix the grammatical error by adding a CJK example!

[vaitkus]

Would it also make sense to add the use utf8; to the example just to make sure the embedded string is interpreted correctly? On my first copy/paste try without the explicit utf8 statement say produced an empty string.

Also, maybe this example could be further enhanced by adding a say statement to the $nv part as well, i.e. explicitly stating in a comment what the expected value should be. Right now, running:

use v5.14;  # needed for num() function

use strict;
use warnings;

use Unicode::UCD qw(num);

use charnames qw(:full);
my $nv = num("\N{RUMI DIGIT ONE}\N{RUMI DIGIT TWO}");
say "$nv";

with v5.34.0 on Ubuntu 22.04 raises an undef value warning at the say statement. However, changing the string to either only "\N{RUMI DIGIT ONE}" or "\N{RUMI DIGIT TWO}" produces proper output.

[jidanni]

Would it also make sense to add the use utf8; to the example just to make sure the embedded string is interpreted correctly?

Near the top of the man page it already says:

℞ 0: Standard preamble
Unless otherwise notes, all examples below require this standard preamble to work correctly...

noted, not notes! S right next to D on the keyboard...

[vaitkus]

@jidanni Sorry, you are correct, I completely missed that part of the cookbook.

My comment about the $nv and your comment "notes" -> "noted" comment should probably still be addressed.