search: consistent "search also" list

• Wraps link around the entire list entry instead of just a symbol. This follows the style we are using everywhere else. The symbol is a marker for "external" link and should not be the only clickable area.

• Syncs style of "search also" list with other lists shown in the results. This means: no bullets, better margins, consistent style.

Signed-off-by: Marco Neumann <marco@crepererum.net>