[htmlify] fix a pod dissection bug
[htmlify] fix a pod dissection bug

previously some routines (like uc, split) were not showing up in the index,
and no per-routine documentation was generated for them

jonathanstowe/doc,jonathanstowe/doc,dnmfarrell/doc,MadcapJake/doc,dha/doc,LLFourn/doc,hoelzro/perl6-doc,muraiki/doc,jonathanstowe/doc,jkeenan/doc,MadcapJake/doc,dnmfarrell/doc,vadz/doc,dmaestro/doc,vadz/doc,dnmfarrell/doc,jonathanstowe/doc,stmuk/doc,antquinonez/doc,muraiki/doc,MadcapJake/doc,jonathanstowe/doc,hoelzro/perl6-doc,gfldex/doc,hoelzro/perl6-doc,gfldex/doc,gfldex/doc,dmaestro/doc,antquinonez/doc,stmuk/doc,dha/doc,cygx/doc,gfldex/doc,perl6/doc,LLFourn/doc,dmaestro/doc,dnmfarrell/doc,tbrowder/doc,perl6/doc,dha/doc,perl6/doc,tbrowder/doc,muraiki/doc,jkeenan/doc,antquinonez/doc,dmaestro/doc,MasterDuke17/doc,MadcapJake/doc,stmuk/doc,jkeenan/doc,gfldex/doc,MadcapJake/doc,jkeenan/doc,hoelzro/perl6-doc,cygx/doc,LLFourn/doc,tbrowder/doc,muraiki/doc,dha/doc,MasterDuke17/doc,jkeenan/doc,cygx/doc,dnmfarrell/doc,dmaestro/doc,perl6/doc,perl6/doc,antquinonez/doc,antquinonez/doc,hoelzro/perl6-doc,LLFourn/doc,MasterDuke17/doc,LLFourn/doc,stmuk/doc,dha/doc,cygx/doc,MasterDuke17/doc,vadz/doc,cygx/doc,muraiki/doc,tbrowder/doc,stmuk/doc