update this field to be textfield instead of checkbox

a11y.module

@@ -372,7 +372,7 @@ function a11y_admin_settings($form, &$form_state) {
     '#required' => FALSE,
   );
   $form['config']['a11y_speechsynthSelector'] = array(
-    '#type' => 'checkbox',
+    '#type' => 'textfield',
     '#title' => t('jQuery Selector for what to read when selected.'),
     '#default_value' => variable_get('a11y_speechsynthSelector', 'article'),
     '#description' => t('This targets the field, converts it to just text() and then will read it to the end user.'),