Man pages matching name pcre2_set_max_pattern_length in section 3:

pcre2_set_max_pattern_length.3.en	debian 10 / libpcre2-dev
pcre2_set_max_pattern_length.3.en	debian 11 / libpcre2-dev
pcre2_set_max_pattern_length.3.en	debian 12 / libpcre2-dev