Update README.md

Author: maholli

README.md

@@ -4,7 +4,7 @@ Design discussions, engineering justifications, and qualification data
 ## [⭐ See the PyCubed Quick Start page for tutorials, design resources, and more!](https://www.notion.so/maholli/PyCubed-4cbfac7e9b684852a2ab2193bd485c4d)
 
 # To Add
-- [ ] PyCubed pinout/infographic
+- [x] PyCubed pinout/infographic
 - [ ] KickSat-2 vibe qualification data (awaiting approval) 
 - [ ] Full radiation test data (awaiting Journal approval)