Remove colspan=2 from test encyclopedia entry.

Was creating an extra column that stuck out from the rest.

PiperOrigin-RevId: 197785920
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 768dbb5..3d0f809 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -104,3 +104,4 @@
 Dmitry Babkin <dbabkin@google.com>
 Klaus Aehlig <aehlig@google.com>
 Robin Nabel <rnabel@ucdavis.edu>
+Jonathan Dierksen <dierksen@google.com>