Fix two typos:
  - 'Subfunctons' -> 'Subfunctions'
  - 'subfuction' -> 'subfunction'

Reviewed-by: Joe Damato <redacted>
Signed-off-by: Ryohei Kinugawa <redacted>
---
  .../device_drivers/ethernet/mellanox/mlx5/kconfig.rst         | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/kconfig.rst b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/kconfig.rst
index 34e911480108..b45d6871492c 100644
--- a/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/kconfig.rst
+++ b/Documentation/networking/device_drivers/ethernet/mellanox/mlx5/kconfig.rst

@@ -114,13 +114,13 @@ Enabling the driver and kconfig options
  **CONFIG_MLX5_SF=(y/n)**
  
  |    Build support for subfunction.
-|    Subfunctons are more light weight than PCI SRIOV VFs. Choosing this option
+|    Subfunctions are more light weight than PCI SRIOV VFs. Choosing this option
  |    will enable support for creating subfunction devices.
  
  
  **CONFIG_MLX5_SF_MANAGER=(y/n)**
  
-|    Build support for subfuction port in the NIC. A Mellanox subfunction
+|    Build support for subfunction port in the NIC. A Mellanox subfunction
  |    port is managed through devlink.  A subfunction supports RDMA, netdevice
  |    and vdpa device. It is similar to a SRIOV VF but it doesn't require
  |    SRIOV support.