Fix lowLevel device capability for GPIO, I2C, SPI

Capability was incorrectly specified as lowLevelDevices.
The correct capability for GPIO, I2C, and SPI is the lowLevel DeviceCapability.
See MicrosoftDocs/windows-dev-docs#474

Author: Jordan Rhee

windows.devices.gpio/gpiocontroller_getdefault_846721868.md

@@ -23,4 +23,4 @@ The default GPIO controller for the system, or null if the system has no GPIO co
 
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiocontroller_pincount.md

@@ -23,4 +23,4 @@ The number of pins on the GPIO controller. Some pins may not be available in use
 [OpenPin](gpiocontroller_openpin.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiocontroller_tryopenpin_619900994.md

@@ -38,4 +38,4 @@ If the method returns true, the *pin* parameter receives an instance of a [GpioP
 [OpenPin](gpiocontroller_openpin.md), [GpioOpenStatus](gpioopenstatus.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiopin_debouncetimeout.md

@@ -23,4 +23,4 @@ The debounce timeout for the GPIO pin, which is an interval during which changes
 [ValueChanged](gpiopin_valuechanged.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiopin_getdrivemode_1456675415.md

@@ -23,4 +23,4 @@ An enumeration value that indicates the current drive mode for the GPIO pin. The
 [GpioPinDriveMode](gpiopindrivemode.md), [GpioPin.SetDriveMode](gpiopin_setdrivemode.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiopin_isdrivemodesupported_1169156336.md

@@ -27,4 +27,4 @@ True if the GPIO pin supports the drive mode that *driveMode* specifies; otherwi
 [GpioPinDriveMode](gpiopindrivemode.md), [GetDriveMode](gpiopin_getdrivemode.md), [SetDriveMode](gpiopin_setdrivemode.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiopin_pinnumber.md

@@ -23,4 +23,4 @@ The pin number of the GPIO pin.
 [GpioController.PinCount](gpiocontroller_pincount.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiopin_read_431746835.md

@@ -23,4 +23,4 @@ The current value of the GPIO pin. If the pin is configured as an output, this v
 [GpioPinValue](gpiopinvalue.md), [GpioPin.Write](gpiopin_write.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiopin_setdrivemode_419000462.md

@@ -33,4 +33,4 @@ The pin is open in shared read-only mode. Close the pin and reopen it in exclusi
 [GpioPinDriveMode](gpiopindrivemode.md), [GpioPin.GetDriveMode](gpiopin_getdrivemode.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />

windows.devices.gpio/gpiopin_sharingmode.md

@@ -23,4 +23,4 @@ The sharing mode in which the GPIO pin is open.
 [GpioSharingMode](gpiosharingmode.md), [GpioController.OpenPin](gpiocontroller_openpin.md)
 
 ## -capabilities
-lowLevelDevices
+<DeviceCapability name="lowLevel" />