Few code standards. Remove composer vendor folder

solutions/other/sum44.php

@@ -1,7 +1,7 @@
 <?php
 //12857 multiplied by 7 gives 90099, and the sum of the digits of 90099 is indeed 27, not 44. Keep trying!
 
-function sumDigits($number) {
+function sumDigits(int $number): int {
     $sum = 0;
     // converting number to string to access digits easily
     $numberStr = (string)$number;