Added short comment on function

Author: maidnl

libraries/Wire/Wire.h

@@ -124,7 +124,7 @@ class TwoWire : public arduino::HardwareI2C {
     void onRequest( void (*)(void) );
 
     void setBusStatus(WireStatus_t);
-
+    /* set timeout in ms for I2C communication */
     void setTimeout(unsigned int t);
 
     inline size_t write(unsigned long n) { return write((uint8_t)n); }