config-solaris: Restore 'zonecfg.1m_2' link targets
config-solaris: Restore 'zonecfg.1m_2' link targets

These were added in f9dc90b0 (make link usage consistent across the
specification, 2017-08-09, #687) to follow the new _N name-dedup
policy discussed in style.md.  They were removed in ea65eb3d
(config-solaris.md: fix info, 2017-04-28, #786), overlooking that
policy.  This commit brings them back.

Signed-off-by: W. Trevor King <f75897670c17327c42ab201733fb8a81ff9f4c34@tremily.us>

laijs/specs,hqhq/specs,wking/opencontainer-runtime-spec,opencontainers/runtime-spec,opencontainers/specs,hqhq/runtime-spec,wking/opencontainer-specs