chore(cite): update citation file

CITATION.cff

@@ -3,25 +3,22 @@
 
 cff-version: 1.2.0
 title: Manim Slides
-message: A Python package for presenting Manim content anywhere
+message: >-
+  If you use this software, please cite it using the
+  metadata from this file.
 type: software
 authors:
   - name: Jérome Eertmans
     orcid: 'https://orcid.org/0000-0002-5579-5360'
     website: 'https://eertmans.be'
-identifiers:
-  - type: doi
-    value: 10.21105/jose.00206
-    description: The paper presenting the software.
 repository-code: 'https://github.com/jeertmans/manim-slides'
 url: 'https://eertmans.be/manim-slides'
 abstract: >-
   Manim Slides is a Python package that makes presenting
   Manim animations straightforward. With minimal changes
   required to pre-existing code, one can slide through
-
   animations in a PowerPoint-like manner, or share its
-  slides online using ReavealJS’ power.
+  slides online using ReavealJS' power.
 keywords:
   - Education
   - Math Animations
@@ -30,3 +27,18 @@ keywords:
   - Python
 license: MIT
 version: v5.1.3
+preferred-citation:
+  publisher:
+    name: The Open Journal
+  type: article
+  authors:
+    - name: Jérome Eertmans
+      orcid: 'https://orcid.org/0000-0002-5579-5360'
+  doi: 10.21105/jose.00206
+  journal: Journal of Open Source Education
+  month: 8
+  year: 2023
+  title: 'Manim Slides: A Python package for presenting Manim content anywhere'
+  volume: 6
+  number: 66
+  pages: 206