Correction of errors in voltage calculation

In official documentation on st 25r3911 when we measure voltage, one LSB represents 23.438 mV. 
When calculating, we multiply the fractional part by a three-digit number. When restoring, we divide it by 100, not by 1000. This is an error.

lib/st25r3911b/st25r3911b_common.c

@@ -31,7 +31,7 @@ LOG_MODULE_DECLARE(st25r3911b);
 #define POWER_SUPP_5V_STEP 120
 #define POWER_SUPP_MEAS_INTEGER 23
 #define POWER_SUPP_MEAS_FRACTION 438
-#define POWER_SUPP_MEAS_FRACTION_DIVISOR 100
+#define POWER_SUPP_MEAS_FRACTION_DIVISOR 1000
 #define REGULATOR_INIT_REG_VALUE 5
 
 #define FIELD_THRESHOLD_TRG_DEFAULT 0x30