update preview imgae for events

Author: jyoti-bhogal

docs/events/images/600_526373842.avif

@@ -254,7 +254,7 @@ <h5 class="no-anchor card-title listing-title">
 <a href="https://www.meetup.com/pune-r-userr-group/events/306881082/?utm_medium=referral&amp;utm_campaign=share-btn_savedevents_share_modal&amp;utm_source=link" class="quarto-grid-link">
 <div class="quarto-grid-item card h-100 card-left">
 <p class="card-img-top">
-<img loading="lazy" src="images/ilija-boshkov-0nI1DczRQAM-unsplash.jpg" class="thumbnail-image card-img" style="height: 150px;">
+<img loading="lazy" src="images/600_526373842.avif" class="thumbnail-image card-img" style="height: 150px;">
 </p>
 <div class="card-body post-contents">
 <h5 class="no-anchor card-title listing-title">

docs/events/index.html

@@ -11,8 +11,8 @@
 
 - title: R Shiny Hands-On
   path: https://www.meetup.com/pune-r-userr-group/events/306881082/?utm_medium=referral&utm_campaign=share-btn_savedevents_share_modal&utm_source=link
-  image: images/ilija-boshkov-0nI1DczRQAM-unsplash.jpg
-  description: >
+  image: images/600_526373842.avif
+  description:
     After an amazing introduction to Shiny, we’re back with a follow-up meetup—this time, it’s all about getting our hands dirty! 🎯
     Photo by <a href="https://unsplash.com/@boshkov?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Ilija Boshkov</a> on
     <a href="https://unsplash.com/photos/a-computer-screen-with-a-program-running-on-it-0nI1DczRQAM?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Unsplash</a>