docs-xml: Build and install man page for wspsearch

docs-xml: Build and install man page for wspsearch

Commit 49b6137f7c2244aeb3cf9b65fc9d46fcf0b8dc55 switched the default
to install `wspsearch` client from False to True but missed to build
and install the corresponding man page. Therefore adding wspsearch.1
to the list of man pages to be built and installed by default.

Signed-off-by: Anoop C S <anoopcs@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Anoop C S <anoopcs@samba.org>
Autobuild-Date(master): Tue Jan 30 14:38:58 UTC 2024 on atb-devel-224