markdownlint: enable rule MD011

MD011 - Reversed link syntax

Signed-off-by: Maciej Wawryk <maciejx.wawryk@intel.com>
Change-Id: I6d56d690559bc04e3d9c89d0f5bdc759803c38a0
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9005


Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>