internal/gophers: add GitHub username mapping for dneil

Change-Id: I1989a6cb1ec2a9c848077e5f7352d7cb07d5d183
Reviewed-on: https://go-review.googlesource.com/c/build/+/304809
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alexander Rakoczy <alex@golang.org>
diff --git a/internal/gophers/gophers.go b/internal/gophers/gophers.go
index 1632ceb..35b7d07 100644
--- a/internal/gophers/gophers.go
+++ b/internal/gophers/gophers.go
@@ -3193,6 +3193,8 @@
 		return "cherrymui"
 	case "cmang":
 		return "paranoiacblack"
+	case "dneil":
+		return "neild"
 	case "drchase":
 		return "dr2chase"
 	case "gri":