content/9years: change Q2 2018 to mid-2018
Per comment from Rob on golang.org/cl/148883.
Run-TryBot: Russ Cox <firstname.lastname@example.org>
Reviewed-by: Russ Cox <email@example.com>
diff --git a/content/9years.article b/content/9years.article
index ca7fd1d..edc8199 100644
@@ -81,7 +81,7 @@
* Go Contributors
The Go project has been increasing in the number of contributions from the community for several years.
-The project hit a major milestone in Q2 2018 when, for the first time,
+The project hit a major milestone in mid-2018 when, for the first time,
we had more contributions coming from the community than the Go team.
.image 9years-graph.png _ 600