Mark lab00 environment checks as verified

lab-00-environment-check/README.md

@@ -4,20 +4,20 @@ This lab establishes the computing environments and tools used throughout the CS
 
 ## Linux Check
 
-- Linux environment: Not yet verified
+- Linux environment: Verified
 - File created: `linux-check.txt`
 
 ## Windows Check
 
-- Windows environment: Not yet verified
+- Windows environment: Verified
 - File created: `windows-check.txt`
 
 ## GitHub Check
 
-- GitHub account: Not yet verified
-- Portfolio repository: Not yet verified
-- Codio connection: Not yet verified
+- GitHub account: Verified
+- Portfolio repository: Verified
+- Codio connection: Verified
 
 ## What I Learned
 
-Briefly describe one thing you learned while setting up your computing environments, GitHub account, or course portfolio.
+I learned absolutely nothing new because this is like the 10th or so time I've set up GitHub with SSH keys.