content/developer-experience: update publish date

Change-Id: Iea4d7e2ba0d77df15d9f1e19ecd3aba387a0d82d
Reviewed-on: https://go-review.googlesource.com/40210
Reviewed-by: Chris Broadfoot <cbro@golang.org>
diff --git a/content/developer-experience.article b/content/developer-experience.article
index 4a5553d..b49f90a 100644
--- a/content/developer-experience.article
+++ b/content/developer-experience.article
@@ -1,5 +1,5 @@
 Introducing the Developer Experience Working Group
-6 Apr 2017
+10 Apr 2017
 
 The Developer Experience Working Group