[Perl/perl5] 88df34: Add missing word in 'if's documentation

[Sven Kirmess via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 88df3495ef351e796cea9d92bdd8da77bace0ef2
      
https://github.com/Perl/perl5/commit/88df3495ef351e796cea9d92bdd8da77bace0ef2
  Author: Sven Kirmess <sven.kirm...@kzone.ch>
  Date:   2021-07-17 (Sat, 17 Jul 2021)

  Changed paths:
    M dist/if/if.pm

  Log Message:
  -----------
  Add missing word in 'if's documentation