Fixed Serial printf

Author: marqdevx

examples/Creating a Flash-Optimised Key-Value Store/FlashKeyValue/FlashKeyValue.ino

@@ -35,10 +35,10 @@ void setup()
 
     // Initialize the flash IAP block device and print the memory layout
     blockDevice.init();
-    Serial.printf("FlashIAP block device size: %llu\r\n", blockDevice.size());
-    Serial.printf("FlashIAP block device read size: %llu\r\n", blockDevice.get_read_size());
-    Serial.printf("FlashIAP block device program size: %llu\r\n", blockDevice.get_program_size());
-    Serial.printf("FlashIAP block device erase size: %llu\r\n", blockDevice.get_erase_size());
+    Serial.println("FlashIAP block device size: " +  blockDevice.size());
+    Serial.println("FlashIAP block device read size: " + blockDevice.get_read_size());
+    Serial.println("FlashIAP block device program size: " + blockDevice.get_program_size());
+    Serial.println("FlashIAP block device erase size: " + blockDevice.get_erase_size());
     // Deinitialize the device
     blockDevice.deinit();