net: dsa: Fix typo in NET_DSA_TAG_RTL4_A Kconfig

Fix a minor typo in the help text for the NET_DSA_TAG_RTL4_A config
option.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20240607020843.1380735-1-chris.packham@alliedtelesis.co.nzSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/dsa/Kconfig

@@ -129,7 +129,7 @@ config NET_DSA_TAG_RTL4_A
 	tristate "Tag driver for Realtek 4 byte protocol A tags"
 	help
 	  Say Y or M if you want to enable support for tagging frames for the
-	  Realtek switches with 4 byte protocol A tags, sich as found in
+	  Realtek switches with 4 byte protocol A tags, such as found in
 	  the Realtek RTL8366RB.
 
 config NET_DSA_TAG_RTL8_4