Dotty -> Scala 3

Author: anatoliykmetyuk

docs/blog/_posts/2021-02-17-scala3-rc1.md

@@ -207,7 +207,7 @@ According to `git shortlog -sn --no-merges 3.0.0-M3..3.0.0-RC1` these are:
      1  tanishiking
 ```
 
-If you want to get your hands dirty and contribute to Dotty, now is a good time to get involved!
+If you want to get your hands dirty and contribute to Scala 3, now is a good time to get involved!
 Head to our [Getting Started page for new contributors](https://dotty.epfl.ch/docs/contributing/getting-started.html),
 and have a look at some of the [good first issues](https://github.com/lampepfl/dotty/issues?q=is%3Aissue+is%3Aopen+label%3Aexp%3Anovice).
 They make perfect entry points into hacking on the compiler.
@@ -216,8 +216,8 @@ We are looking forward to having you join the team of contributors.
 
 ## Library authors: Join our community build
 
-Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
-snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
+Scala 3 now has a set of widely-used community libraries that are built against every nightly Scala 3
+snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt, squants and many others.
 Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
 to make sure that our regression suite includes your library.