fix bad logo image (#1340)

Author: cscheid

_quarto.yml

@@ -32,7 +32,7 @@ website:
   page-footer:
     left: |
       Proudly supported by
-      [![](https://www.rstudio.com/assets/img/posit-logo-fullcolor-TM.svg){fig-alt="Posit" width=65px}](https://posit.co)
+      [![](https://posit.co/wp-content/uploads/2024/06/Posit-Logos-2024_horiz-full-color.svg){fig-alt="Posit" width=65px}](https://posit.co)
     center:
       - text: "About"
         href: about.qmd