bench: fix loop limit

Co-authored-by: Nakul Krishnakumar <nakulkrishnakumar86@gmail.com>
Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/stats/strided/distances/dminkowski/benchmark/c/benchmark.length.c

@@ -191,7 +191,7 @@ int main( void ) {
 	for ( i = MIN; i <= MAX; i++ ) {
 		len = pow( 10, i );
 		iter = ITERATIONS / pow( 10, i-1 );
-		for ( p = 0; p < 5; p++ ) {
+		for ( p = 0; p < 4; p++ ) {
 			for ( j = 0; j < REPEATS; j++ ) {
 				count += 1;
 				printf( "# c::%s:len=%d:p=%.2f\n", NAME, len, powers[ p ] );