FPGA-README update the doc message to match the changed code message
diff --git a/FPGA-README b/FPGA-README
index de12f5c..9f9c4ab 100644
--- a/FPGA-README
+++ b/FPGA-README
@@ -9,7 +9,7 @@ When mining on windows, the driver being used will determine if mining will work
If the driver doesn't allow mining, you will get a "USB init," error message
i.e. one of:
- open device failed, err %d, you need to install a Windows USB driver for the device
+ open device failed, err %d, you need to install a WinUSB driver for the device
or
claim interface %d failed, err %d