Change the incorrect driver documentation link to fix
following documentation build warning.
$ make doc-guides-html
sphinx processing guides-html...
doc/guides/rel_notes/release_17_11.rst:58:
WARNING: unknown document: ../nics/mrvl
Fixes: fe93968722af ("net/mrvl: rename PMD as mvpp2")
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Marko Kovacevic <marko.kovacevic@intel.com>
8437489fa6