Fix missing :: on submodule config options

Change-Id: Icb62fc2ef087ddf4078cf1dad8a3470dd337a4c6
diff --git a/Documentation/config-gerrit.txt b/Documentation/config-gerrit.txt
index b7d64de..6ca9bdc 100644
--- a/Documentation/config-gerrit.txt
+++ b/Documentation/config-gerrit.txt
@@ -3990,7 +3990,7 @@
 [[submodule]]
 === Section submodule
 
-[[submodule.verbosesuperprojectupdate]]submodule.verboseSuperprojectUpdate
+[[submodule.verbosesuperprojectupdate]]submodule.verboseSuperprojectUpdate::
 +
 When using link:user-submodules.html#automatic_update[automatic superproject updates]
 this option will determine if the submodule commit messages are included into
@@ -3998,7 +3998,7 @@
 +
 By default this is true.
 
-[[submodule.enableSuperProjectSubscriptions]]submodule.enableSuperProjectSubscriptions
+[[submodule.enableSuperProjectSubscriptions]]submodule.enableSuperProjectSubscriptions::
 +
 This allows to enable the superproject subscription mechanism.
 +