Fixed linter errors.

web/pgadmin/static/js/helpers/wizard/Wizard.jsx

@@ -217,5 +217,7 @@ Wizard.propTypes = {
   stepPanelCss: PropTypes.oneOfType([PropTypes.string, PropTypes.object]),
   rootClass: PropTypes.oneOfType([PropTypes.string, PropTypes.object]),
   children: PropTypes.oneOfType([PropTypes.arrayOf(PropTypes.node), PropTypes.node]),
-  disableDialogHelp: PropTypes.bool
+  disableDialogHelp: PropTypes.bool,
+  beforeNext: PropTypes.func,
+  beforeBack: PropTypes.func,
 };

web/pgadmin/static/js/helpers/wizard/WizardStep.jsx

@@ -11,15 +11,15 @@ import React from 'react';
 import PropTypes from 'prop-types';
 export default function WizardStep({ ...props }) {
   return (
-      <> {
-        React.Children.map(props.children, (child) => {
-          return (
-            <>
-              {child}
-            </>
-          );
-        })
-      }
+    <> {
+      React.Children.map(props.children, (child) => {
+        return (
+          <>
+            {child}
+          </>
+        );
+      })
+    }
     </>
   );
 }