doc: Set html title with pod2html for make html

Pass title argument to pod2html, instead of editing the file afterwards.
This helps avoiding broken tags in the resulting document.

Author: pmodin

Makefile.PL

@@ -105,10 +105,9 @@ sub clean { ## no critic (RequireArgUnpacking)
     $string .= qq{\t@ gpg --verify check_postgres.pl.asc\n};
     $string .= qq{\n\nhtml : \n\t};
     $string .= <<'EOM';
-	pod2html check_postgres.pl > check_postgres.pl.html
+	pod2html --title check_postgres.pl check_postgres.pl > check_postgres.pl.html
 	@ perl -pi -e "s/<link.*?>//" check_postgres.pl.html
 	@ perl -pi -e "s~ git clone.*~ git clone git://bucardo.org/check_postgres.git</pre>~" check_postgres.pl.html
-	@ perl -pi -e "s~<title>\S+(.+)~<title>check_postgres.pl\\1~" check_postgres.pl.html
 	@ perl -pi -e "s~\`\`(.+?)''~&quot;\\1&quot;~g" check_postgres.pl.html
 	@ rm -f pod2htmd.tmp pod2htmi.tmp
 EOM