README.pod: Fix typo "PCRE2_UTF82" => "PCRE2_UTF" [ci skip]
README.pod: Fix typo "PCRE2_UTF82" => "PCRE2_UTF" [ci skip]

jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF,jddurand/c-marpaESLIF