style: enable ParenPad in checkstyle (#5226)

* enable ParenPad

* style: enable ParenPad in checkstyle

---------

Co-authored-by: Samuel Facchinello <[email protected]>

Author: samuelfac

checkstyle.xml

@@ -140,7 +140,7 @@
     <!-- TODO <module name="NoWhitespaceAfter"/> -->
     <module name="NoWhitespaceBefore"/>
     <module name="OperatorWrap"/>
-    <!-- TODO <module name="ParenPad"/> -->
+    <module name="ParenPad"/>
     <module name="TypecastParenPad"/>
     <module name="WhitespaceAfter"/>
     <!-- TODO <module name="WhitespaceAround"/> -->

src/main/java/com/thealgorithms/datastructures/graphs/BellmanFord.java

@@ -57,9 +57,11 @@ public static void main(String[] args) {
         obj.go();
     }
 
-    public void go() { // shows distance to all vertices // Interactive run for understanding the
-        try ( // class first time. Assumes source vertex is 0 and
-            Scanner sc = new Scanner(System.in)) {
+    public void go() {
+        // shows distance to all vertices
+        // Interactive run for understanding the
+        // class first time. Assumes source vertex is 0 and
+        try (Scanner sc = new Scanner(System.in)) {
             int i;
             int v;
             int e;