PCI: xilinx: Trivial fix in DT example

Good to have it properly describe for c&p cases.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>

Documentation/devicetree/bindings/pci/xilinx-pcie.txt

@@ -58,5 +58,5 @@ Example:
 			interrupt-controller;
 			#address-cells = <0>;
 			#interrupt-cells = <1>;
-		}
+		};
 	};