adding a link to the pzwart.nl page for more info on the open dat

index.html

@@ -157,7 +157,7 @@ The course uses a mailing list provided by neighbor network <a href="https://we.
 <section id="apply-to-the-course" class="level2">
 <h2>apply to the course</h2>
 <p><strong>Applications deadlines</strong>: March 7, 2023 (non-EU) and <em>May 10, 2023</em> (EU)</p>
-<p><strong>Open day</strong>: <em>February 11, 2023</em> (in person and online)</p>
+<p><strong>Open day</strong>: <em>February 11, 2023</em> (in person and online) <a href="https://www.pzwart.nl/blog/2023/01/12/open-day-february-11-2023/">more information</a></p>
 <p><a href="https://www.pzwart.nl/experimental-publishing/apply/"><button class="apply">Apply</button></a></p>
 </section>
 </body>

index.md

@@ -293,6 +293,6 @@ apply to the course
 -------------------------
 **Applications deadlines**: March 7, 2023 (non-EU) and *May 10, 2023* (EU)
 
-**Open day**: *February 11, 2023* (in person and online)
+**Open day**: *February 11, 2023* (in person and online) [more information](https://www.pzwart.nl/blog/2023/01/12/open-day-february-11-2023/)
 
 <a href="https://www.pzwart.nl/experimental-publishing/apply/"><button class="apply">Apply</button></a>