Used chatgpt to edit the code files of open emr abd add WYSIWYG HTML Editor.
So far so good.
Just the save submit button link is not working. Maybe @Param_CapMinds or any developer can help fix this, we can make some good changes to Open EMR. 
below is the report.php file which chatgpt edited from clinical_notes.
<?php
// Include CKEditor JavaScript and CSS files
?>
<script src="https://cdn.ckeditor.com/4.16.2/standard/ckeditor.js"></script>
<link rel="stylesheet" href="https://cdn.ckeditor.com/4.16.2/standard/ckeditor.css">
<?php
// Display a textarea element for the narrative field
?>
<form method="post" action=""> <!-- Assuming save_notes.php is the file handling the save operation -->
<textarea name="narrative" id="narrative"></textarea>
<button type="submit">Save Note</button>
</form>
<?php
// Initialize CKEditor on the textarea element
?>
<script>
CKEDITOR.replace('narrative');
</script>
<?php
use OpenEMR\Services\ClinicalNotesService;
require_once(__DIR__ . "/../../globals.php");
require_once($GLOBALS["srcdir"] . "/api.inc.php");
function clinical_notes_report($pid, $encounter, $cols, $id) {
$count = 0;
$clinicalNotesService = new ClinicalNotesService();
$records = $clinicalNotesService->getClinicalNotesForPatientForm($id, $pid, $encounter) ?? [];
$data = array_filter($records, function ($val) {
return $val['activity'] == ClinicalNotesService::ACTIVITY_ACTIVE;
});
if (!empty($data)) { // Check if $data is not empty before proceeding
?>
<table class="table w-100">
<thead>
<tr>
<th class="border p-1"><?php echo xlt('Date / Note Type'); ?></th>
<th class="border p-1"><?php echo xlt('Narrative'); ?></th>
<th class="border p-1"><?php echo xlt('Author / Code'); ?></th>
<th class="border p-1"><?php echo xlt('Note Category'); ?></th>
</tr>
</thead>
<tbody>
<?php
foreach ($data as $key => $value) {
if(isset($value['description']) && $value['description'] != ''){
$value['description'] = str_replace("\n", "<br>", $value['description']);
}
?>
<tr>
<td class="border p-1"><span class='text'><?php echo text($value['date']) . ' / ' . text($value['codetext']); ?></span></td>
<td class="border p-1"><span class='text'><?php echo $value['description']; ?></span></td>
<td class="border p-1"><span class='text'><?php echo text($value['user']) . ' / ' . text($value['code']); ?></span></td>
<td class="border p-1"><span class='text text-wrap'><?php echo text($value['category_title']); ?></span></td>
</tr>
<?php
}
?>
</tbody>
</table>
<?php
}
}
?>