cloud-update pipeline fix typo

Change-Id: I47575adb05bc1a6a45c10cc8d037c316efc10949
diff --git a/cloud-update.groovy b/cloud-update.groovy
index b6a44b6..07674e2 100644
--- a/cloud-update.groovy
+++ b/cloud-update.groovy
@@ -1534,7 +1534,7 @@
 
             if (merges.contains("log")) {
                 if (salt.testTarget(pepperEnv, LOG_TARGET)) {
-                    mergeSnapshot(pepperEnv, LOG_TARGET. 'log')
+                    mergeSnapshot(pepperEnv, LOG_TARGET, 'log')
                 }
             }