Fix SD.open() for append

The SD.open() method only accepts FILE_READ and FILE_WRITE -- FILE_APPEND is not defined.  FILE_WRITE defaults to seeking to the end of the file and will facilitate an append operation.  Fix example.

Author: rnowling

content/hardware/03.nano/carriers/nano-connector-carrier/tutorials/getting-started-nano-connector-carrier/content.md

@@ -471,7 +471,7 @@ void loop() {
     unsigned long currentTime = millis();
     if (currentTime - lastRecordTime >= RECORD_INTERVAL) {
       // Open the file for writing
-      dataFile = SD.open(fileName, FILE_APPEND);
+      dataFile = SD.open(fileName, FILE_WRITE);
       
       if (dataFile) {
         // Write timestamp and movement data to CSV file
@@ -649,4 +649,4 @@ For additional project inspiration, check out the Arduino Project Hub or join th
 
 ## Conclusion
 
-The Nano Connector Carrier transforms your Nano family board into a versatile platform capable of interfacing with different sensors, displays and storage options. By eliminating complex wiring and providing standardized pinouts, the Nano Connector Carrier allows you to focus on developing your application rather than dealing with connection issues.
+The Nano Connector Carrier transforms your Nano family board into a versatile platform capable of interfacing with different sensors, displays and storage options. By eliminating complex wiring and providing standardized pinouts, the Nano Connector Carrier allows you to focus on developing your application rather than dealing with connection issues.