add photo for CO2 activity

Author: chrisorban

docs/activities.html

@@ -440,11 +440,11 @@ <h5 class="no-anchor card-title listing-title">
 </div>
 </a>
 </div>
-<div class="g-col-1" data-index="6" data-categories="SW50cm8lMjBIUyUyQ0RhdGElMjBTY2llbmNlJTJDU3ByZWFkc2hlZXRz" data-listing-file-modified-sort="1749522315858" data-listing-reading-time-sort="1" data-listing-word-count-sort="4">
+<div class="g-col-1" data-index="6" data-categories="SW50cm8lMjBIUyUyQ0RhdGElMjBTY2llbmNlJTJDU3ByZWFkc2hlZXRz" data-listing-file-modified-sort="1749534984186" data-listing-reading-time-sort="1" data-listing-word-count-sort="4">
 <a href="./projects/co2.html" class="quarto-grid-link">
 <div class="quarto-grid-item card h-100 card-left">
 <p class="card-img-top">
-<img loading="lazy" src="./img/.png" class="thumbnail-image card-img" style="height: 150px;">
+<img loading="lazy" src="./img/co2.png" class="thumbnail-image card-img" style="height: 150px;">
 </p>
 <div class="card-body post-contents">
 <h5 class="no-anchor card-title listing-title">

docs/img/co2.png

@@ -1,6 +1,6 @@
 ---
 title: "CO2 Survey"
-image: ../img/.png
+image: ../img/co2.png
 categories:
     - Intro HS
     - Data Science