fix aspect ratio for group image

Justin's face is squished b/c of the hardcoded width constraint. I uploaded a new copy of the file cropped to the expected proportions. Jordan's CV filename was also adjusted to match the updated convention.

Author: owlang

assets/docs/JordanKrebsCV.pdf assets/docs/JordanKrebs_CV.pdfassets/docs/JordanKrebsCV.pdf renamed to assets/docs/JordanKrebs_CV.pdf

@@ -293,7 +293,7 @@ <h5 class="">Justin Cha</h5>
         </p>
         <li class="media">
           <img
-            src="assets/images/Justin_Cha.jpg"
+            src="assets/images/Justin_Cha.png"
             alt="justin"
             class="mr-3"
           />