RDMA/core/restrack: Fix kernel-doc formatting issue

Fixes the following W=1 kernel build warning(s):

 drivers/infiniband/core/restrack.c:209: warning: Function parameter or member 'res' not described in 'rdma_restrack_new'
 drivers/infiniband/core/restrack.c:209: warning: Function parameter or member 'type' not described in 'rdma_restrack_new'

Link: https://lore.kernel.org/r/20210118223929.512175-17-lee.jones@linaro.org
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/core/restrack.c

@@ -201,8 +201,8 @@ EXPORT_SYMBOL(rdma_restrack_parent_name);
 /**
  * rdma_restrack_new() - Initializes new restrack entry to allow _put() interface
  * to release memory in fully automatic way.
- * @res - Entry to initialize
- * @type - REstrack type
+ * @res: Entry to initialize
+ * @type: REstrack type
  */
 void rdma_restrack_new(struct rdma_restrack_entry *res,
 		       enum rdma_restrack_type type)