Fix error in pow task solution

Author: mikegee0101

1-js/02-first-steps/14-function-basics/4-pow/solution.md

@@ -13,7 +13,7 @@ function pow(x, n) {
 let x = prompt("x?", '');
 let n = prompt("n?", '');
 
-if (n <= 1) {
+if (n < 1) {
   alert(`Power ${n} is not supported,
     use an integer greater than 0`);
 } else {