Keywords not alphabetized when adding a Reference

So I just wanted to post a fix for this so that anyone else struggling with this.
Make sure to target the correct form ID to the forms you want to set.
In a custom module add this code in the mymodule.module file:

<?php
use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_form_alter().
 */
function mymodule_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
    // List of relevant form IDs for Bibcite.
    $target_form_ids = [
        'bibcite_reference_book_form',
        'bibcite_reference_book_chapter_form',
        'bibcite_reference_journal_article_form',
        'bibcite_reference_book_edit_form',
        'bibcite_reference_book_chapter_edit_form',
        'bibcite_reference_journal_article_edit_form',
    ];

    // Check if the current form is one of the target forms.
    if (in_array($form_id, $target_form_ids)) {
        // Check if the Keywords field exists in the form.
        if (isset($form['keywords']['widget']['#options']) && is_array($form['keywords']['widget']['#options'])) {
            // Sort the options alphabetically.
            asort($form['keywords']['widget']['#options']);
        }
    }
}