Changes version to edition

README.insiders.md

@@ -1 +1 @@
-> **This is the insiders version of GitLens for early feedback and testing. It works best with [VS Code Insiders](https://code.visualstudio.com/insiders).**
+> **This is the insiders edition of GitLens for early feedback and testing. It works best with [VS Code Insiders](https://code.visualstudio.com/insiders).**