Use Github page in URL
According to https://www.pcre.org/, "Please note that neither this website nor the SourceForge download repositories are maintained by Philip. Please report website or SourceForge PCRE project problems to webmaster@pcre.org.". https://www.pcre2.org/ is not maintained by Philip Hazel who is the maintainer of pcre2. So, I think it is more appropriate to use https://github.com/PCRE2Project/pcre2 in URL.