Update docs/blog/_posts/2020-12-18-scala3-m3.md

Co-authored-by: Sébastien Doeraene <[email protected]>

Author: anatoliykmetyuk

docs/blog/_posts/2020-12-18-scala3-m3.md

@@ -89,7 +89,7 @@ imm match
   case a: Array[Int] => a(0) = 0  // but that's shown to be lie
 ```
 
-To address this change, a new trait, `Matchable`, is introduced at the top of the type hierarchy:
+To address this change, we introduce a new trait `Matchable` near the top of the type hierarchy:
 
 ```scala
 abstract class Any: