shoaib4/issue#5229

code formetting

Author: sshaikshoaib

src/main/java/com/thealgorithms/datastructures/lists/SinglyLinkedList.java

@@ -392,7 +392,8 @@ public int poll() {
         head = head.next;
         size--; // As head is removed size will be decreased
         return headValue;
-    }    
+    
+    }
 
     /**
      * @param position to check position