e2e-tests: Fix CloneUsingMultiGerrit1 seconds unit

Fix the wait times unit plural form.

Change-Id: I3727bc64c4b253a379a8b1bbfb747b56dd741ecc

src/test/scala/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.scala

diff --git a/src/test/scala/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.scala b/src/test/scala/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.scala
index 4a7c65d..bc51a39 100644
--- a/src/test/scala/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.scala
+++ b/src/test/scala/com/googlesource/gerrit/plugins/multisite/scenarios/CloneUsingMultiGerrit1.scala
@@ -42,11 +42,11 @@
       atOnceUsers(1)
     ),
     test.inject(
-      nothingFor(21 second),
+      nothingFor(21 seconds),
       atOnceUsers(1)
     ),
     deleteProject.test.inject(
-      nothingFor(23 second),
+      nothingFor(23 seconds),
       atOnceUsers(1)
     ),
   ).protocols(gitProtocol, httpProtocol)