format code according to conventions [skip ci]

quantum/quantum.c

@@ -643,7 +643,7 @@ void matrix_scan_quantum() {
 //
 
 void send_dword(uint32_t number) {  // this might not actually work
-    uint16_t word = (number >> 16);
+    uint16_tword = (number >> 16);
     send_word(word);
     send_word(number & 0xFFFFUL);
 }