Introduced new generalized JSON-format for `top10`

[demos/kafka/wordcount] / top10

diff --git a/top10 b/top10
index aa9d59f..238491e 160000 (submodule)
--- a/top10
+++ b/top10
@@ -1 +1 @@
-Subproject commit aa9d59fa93178f40797a8bb3716dd0a30594833f
+Subproject commit 238491ed4d33495202e79879954802e5d0836006