[Minor] Fix doc string

diff --git a/src/plugins/lua/history_redis.lua b/src/plugins/lua/history_redis.lua
index 01be2dacd715a84433cb2e64833b3ad50a526491..f2554ef93de9e6b8bf893bdcd7ab250c5edadb01 100644 (file)
--- a/src/plugins/lua/history_redis.lua
+++ b/src/plugins/lua/history_redis.lua
@@ -20,7 +20,7 @@ if confighelp then
       [[
 redis_history {
   # History key name
-  key_prefix = 'rs_history';
+  key_prefix = 'rs_history{{HOSTNAME}}{{COMPRESS}}';
   # History expire in seconds
   expire = 0;
   # History rows limit