Formatting changes to README

Work includes:

• Just adding some formatting to README for readability

To test:

• Look at README for this branch in the GitLab project UI and check for appearance:
  • https://code.ornl.gov/ndip/ssh-oidc/-/tree/formats-to-readme

PS awesome work on this repository! I'm gonna try to find time to look it over and test soon. Thanks!

ReadMe.md

 
-#2FA
+# 2FA
 
-##links
-https://goteleport.com/blog/ssh-2fa-tutorial/
-https://github.com/google/google-authenticator-libpam
+## Links
 
-##getting secrets/link to a QR code for Google Authenticator
+* https://goteleport.com/blog/ssh-2fa-tutorial/
+* https://github.com/google/google-authenticator-libpam
+
+## Getting secrets/link to a QR code for Google Authenticator
 ```
 docker run --entrypoint="" ubuntu_sshd_2fa cat /home/test/auth_secrets
 ```
 
-#PAM module in Python
+# PAM module in Python
 
 https://developers.onelogin.com/authentication/tools/linux-ssh-pam-module
 
-#keycloak
+# Keycloak
 
 get token