Added Serial.begin(115200) to both examples so that they work on non-bootloader boards

STM32F1/libraries/Wire/examples/i2c_scanner_hwire/i2c_scanner_hwire.ino

@@ -31,6 +31,7 @@
 HardWire HWire(1, I2C_FAST_MODE); // I2c1
 
 void setup() {
+  Serial.begin(115200);
   HWire.begin();
   Serial.println("\nI2C Scanner");
 }

STM32F1/libraries/Wire/examples/i2c_scanner_wire/i2c_scanner_wire.ino

@@ -28,6 +28,8 @@
 
 
 void setup() {
+
+  Serial.begin(115200);
   Wire.begin();
   Serial.println("\nI2C Scanner");
 }