[tools] testbot/TestWTBS: Tweak the message for failed TestUnits module matches.

[Francois Gouget]

Signed-off-by: Francois Gouget 
---
 testbot/tests/TestWTBS | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testbot/tests/TestWTBS b/testbot/tests/TestWTBS
index 04487c4bc..e3b0a3ce6 100755
--- a/testbot/tests/TestWTBS
+++ b/testbot/tests/TestWTBS
@@ -1217,7 +1217,7 @@ sub CheckJobTree($;$)
             $TestUnits->{$MissionType}->{$TestUnit} = 0;
             $Matched = 1;
           }
-          ok($Matched, "Check that $MissionType VMs ran $TestGrep for job $JobId")
+          ok($Matched, "Check that $MissionType VMs ran $TestGrep tests for job $JobId")
               or diag("TestUnits=", join(" ", sort keys %{$TestUnits->{$MissionType}}));
         }
         my @ExtraUnits = grep { $TestUnits->{$MissionType}->{$_} } keys %{$TestUnits->{$MissionType}};