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

@@ -53,7 +53,7 @@ given global: ExecutionContext = ForkJoinContext()
 given Context = ctx
 ```
 
-You can find an extensive discussion on the above change in its [PR #10538](https://github.com/lampepfl/dotty/pull/10538).
+You can find a discussion of the above change in the [PR #10538](https://github.com/lampepfl/dotty/pull/10538).
 
 ## Drop `as` in patterns
 Since we dropped `as` from `given`s, we lost a strong reason for having `as` at all. For this reason, we dropped them also from patterns. If previously the correct binding syntax is patterns was: