Fix clang-format: Use single space before inline comments

- Change double spaces to single spaces before inline comments
- Lines 56-58: Adjust comment spacing to match clang-format requirements
- Maintain code readability and functionality

Author: PauLopNun

src/main/java/com/thealgorithms/sorts/AmericanFlagSort.java

@@ -53,9 +53,9 @@ private <T extends Comparable<T>> void bucketSort(T[] array, int start, int end)
         // Partition into buckets based on comparison with pivot
         T pivot = array[start + length / 2];
 
-        int lt = start;  // less than pivot
-        int gt = end;    // greater than pivot
-        int i = start;   // current element
+        int lt = start; // less than pivot
+        int gt = end; // greater than pivot
+        int i = start; // current element
 
         while (i <= gt) {
             int cmp = array[i].compareTo(pivot);