Fix: missed version update

Author: CatHood0

README.md

@@ -73,13 +73,13 @@ Then, import the package and use it in your Flutter application:
 import 'package:flutter_quill_delta_from_html/flutter_quill_delta_from_html.dart';
 
 void main() {
-  String htmlContent = "<p>Hello, <b>world</b>!</p>";
+  String htmlContent = '<p style="line-height: 2.0">Hello, <b>world</b>!</p>';
   var delta = HtmlToDelta().convert(htmlContent, transformTableAsEmbed: false);
 /*
    { "insert": "hello, " },
    { "insert": "world", "attributes": {"bold": true} },
    { "insert": "!" },
-   { "insert": "\n" }
+   { "insert": "\n", { 'line-height': 2.0 } }
 */
 }
 ```

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_quill_delta_from_html
 description: "Convert easily HTML inputs content to Quill Js Delta format"
-version: 1.5.2
+version: 1.5.3
 homepage: https://github.com/CatHood0/flutter_quill_delta_from_html
 repository: https://github.com/CatHood0/flutter_quill_delta_from_html
 issue_tracker: https://github.com/CatHood0/flutter_quill_delta_from_html/issues