dt-bindings: pinctrl: spacemit: k3: fix drive-strength doc

Fix a typo in DT documentation, it should describe the 3.3V drive strength
table of SpacemiT k3 SoC.

Fixes: 5adaa1a ("dt-bindings: pinctrl: spacemit: add K3 SoC support")
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Yixun Lan <dlan@gentoo.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>

Author: dlan17

Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml

@@ -87,7 +87,7 @@ patternProperties:
                 description: For K3 SoC, 1.8V voltage output
 
               - enum: [ 3, 5, 7, 9, 11, 13, 15, 17, 25, 27, 29, 31, 33, 35, 37, 38 ]
-                description: For K3 SoC, 1.8V voltage output
+                description: For K3 SoC, 3.3V voltage output
 
           input-schmitt:
             description: |