Fix shortlog command

Co-authored-by: Tom Grigg <[email protected]>

Author: anatoliykmetyuk

docs/blog/_posts/2021-03-31-scala3-rc2.md

@@ -54,7 +54,7 @@ If you have questions or any sort of feedback, feel free to send us a message on
 ## Contributors
 Thank you to all the contributors who made this release possible 🎉
 
-According to `git shortlog -sn --no-merges 3.0.0-M3..3.0.0-RC1` these are:
+According to `git shortlog -sn --no-merges 3.0.0-RC1..3.0.0-RC2` these are:
 
 ```
 TODO