fix avatars and blog post preview images

blog/2022-07-01-starting-up.md

@@ -4,7 +4,7 @@ description: Saint Louis University Computer Science Department starts and open
 slug: starting-up
 authors: [daniel]
 tags: [announcement, news]
-image: /img/daniel.jpg
+image: /img/oss-logo-white.png
 hide_table_of_contents: false
 ---
 

blog/2023-09-16-elementary-portable-os.md

@@ -4,20 +4,20 @@ description: We launched first monthly open source software workshop at the SLU
 slug: elementary-os
 authors: [daniel]
 tags: [announcement, news]
-image: https://oss-slu.github.io/img/daniel.png
+image: ./oss-atc-20230915/20230915_003.jpg
 hide_table_of_contents: false
 ---
 
 We launched first monthly open source software workshop at the SLU Library's ATC. Students got a hands-on practice creating and using a portable Linux. It was a great success that exceeded the expectations of all the planners. 
 
 <!--truncate-->
 
-What: Elementary OS
-Who: Presentedy by Yash Bhatia, MS student in Computer Science
-When: Friday, September 15
-  1:30-2:30 p.m. (1 hour)
-Where: Pius Library, ATC
-Resources: printed instructions
+**What:** Elementary OS<br/>
+**Who:** Presentedy by [Yash Bhatia](https://yashb196.github.io/yashb196/), MS student in Computer Science<br/>
+**When:** Friday, September 15<br/>
+  1:30-2:30 p.m. (1 hour)<br/>
+**Where:** [Pius Library, ATC](https://www.slu.edu/library/services/academic-technology-commons/index.php)<br/>
+**Resources:** [presentation of instructions](https://docs.google.com/presentation/d/1QhlBWzoqiha1X8AogqNqMb4jynmaEDOAU2xmdrFD3Cc/edit?usp=sharing)
 
 A group of students and staff huddled over laptops around a large conference table in the Academic Technology Commons of Saint Louis University's Pius Library. The sound of 3D printers hummed in the background. On an already busy Friday afternoon these students had elected to spend their time getting some hands on experiences with open source software. 
 

blog/authors.yml

@@ -2,10 +2,10 @@ kate:
   name: Kate Holdener, Ph.D.
   title: Assistant Professor of Computer Science & Faculty Lead for Open Source with SLU
   url: https://github.com/kate-holdener
-  image_url: https://oss-slu.github.io/img/Holdener_2_small.jpg
+  image_url: /img/kate_avatar.jpg
 
 daniel:
   name: Daniel Shown
   title: Program Director for Open Source with SLU
   url: https://github.com/kungfuchicken.com
-  image_url: https://oss-slu.github.io/img/daniel.jpg
+  image_url: /img/daniel_avatar.jpg