www: add rel=next and rel=prev navigation hints

This can makes navigation easier with some browsers or
or browser extensions.

ref: https://www.w3.org/TR/html/links.html#sequential-link-types

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/Feed.pm b/lib/PublicInbox/Feed.pm
index 096bff9d..d433726f 100644
--- a/lib/PublicInbox/Feed.pm
+++ b/lib/PublicInbox/Feed.pm
@@ -185,7 +185,7 @@ sub nav_footer {
         my $anchor = $state->{anchor_idx};
 
         if ($last) {
-                $next = qq!<a\nhref="?$param=$last">next</a>!;
+                $next = qq!<a\nhref="?$param=$last"\nrel=next>next</a>!;
         }
         if ($old_r) {
                 $head = $cgi->path_info;