Update Jim & Josh titles (#768)

Author: brikis98

_data/team.yml

@@ -1,6 +1,6 @@
 - name: Yevgeniy ("Jim") Brikman
   url: "https://www.ybrikman.com"
-  title: Co-founder
+  title: Co-founder and CEO
   image: /assets/img/headshots/jim.jpg
   bio: |
     Jim is the author of two books published by O’Reilly Media: <i><a href="https://www.hello-startup.net">Hello,
@@ -10,7 +10,7 @@
 
 - name: Josh Padnick
   url: "https://joshpadnick.com"
-  title: Co-founder
+  title: Co-founder and CPO
   image: /assets/img/headshots/josh.jpg
   bio: |
     Josh is the author of the definitive