fix: Source code link + Manifest.json update name

manifest.json

@@ -1,5 +1,5 @@
 {
-  "name": "Pascar Text Editor",
+  "name": "Pascar",
   "short_name": "Pascar",
   "start_url": "index.html",
   "display": "standalone",

src/index.html

@@ -1311,6 +1311,9 @@
           No server. No data sent anywhere.<br>
           Open &amp; save files via your local filesystem.
         </div>
+	<div style="font-size:14px;line-height:1.6;text-align:center;">
+	  <a style="color:#295991;" href="https://github.com/potentzero/pascar" target="_blank">Source code</a>
+	  by Nirmal Kumar R.
       </div>
       <div class="dialog-buttons"><button class="btn primary" id="d-about-ok">OK</button></div>
     `, () => {
@@ -1349,3 +1352,4 @@
 </script>
 </body>
 </html>
+