changed voltage units to Volts to match other libs

Author: siddacious

adafruit_ina260.py

@@ -200,11 +200,11 @@ def current(self):
 
     @property
     def voltage(self):
-        """The bus voltage (between V- and GND) in mV"""
+        """The bus voltage in V"""
         if self.mode == Mode.TRIGGERED:
             while self._conversion_ready == 0:
                 pass
-        return self._raw_voltage * 1.25
+        return self._raw_voltage * 0.00125
 
     @property
     def power(self):

examples/ina260_simpletest.py

@@ -5,6 +5,6 @@
 i2c = board.I2C()
 ina260 = adafruit_ina260.INA260(i2c)
 while True:
-    print("Current: %.2f Voltage: %.2f Power:%.2f"
+    print("Current: %.2f mV Voltage: %.2f V Power:%.2f mW"
           %(ina260.current, ina260.voltage, ina260.power))
     time.sleep(1)