dt-bindings: regulator: Fix node descriptions in uniphier-regulator example

Drop a parent node of the regulator as it is not directly necessary.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221213082449.2721-5-hayashi.kunihiko@socionext.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/regulator/socionext,uniphier-regulator.yaml

@@ -89,18 +89,11 @@ required:
 
 examples:
   - |
-    usb-glue@65b00000 {
-        compatible = "simple-mfd";
-        #address-cells = <1>;
-        #size-cells = <1>;
-        ranges = <0 0x65b00000 0x400>;
-
-        usb_vbus0: regulators@100 {
-            compatible = "socionext,uniphier-ld20-usb3-regulator";
-            reg = <0x100 0x10>;
-            clock-names = "link";
-            clocks = <&sys_clk 14>;
-            reset-names = "link";
-            resets = <&sys_rst 14>;
-        };
+    usb_vbus0: regulators@100 {
+        compatible = "socionext,uniphier-ld20-usb3-regulator";
+        reg = <0x100 0x10>;
+        clock-names = "link";
+        clocks = <&sys_clk 14>;
+        reset-names = "link";
+        resets = <&sys_rst 14>;
     };