rename to ndjson

src/main/assemblies/extension/kibana/README.md

@@ -11,14 +11,14 @@ Providing example of kibana settings file for monitoring search logs of fess.
 1. Click **Management**.
 1. Click **Index Patterns**.
 1. Click **Create index pattern** button
-1. Input "fess_log*" to the textbox of **index pattern**.
+1. Input "fess\_log\*" to the textbox of **index pattern**.
 1. Click **Next step**.
 1. Set "requestedAt" to the **Time Filter field name**.
 1. Click **Create index pattern**.
 1. Click **Saved Objects**.
-1. Click **Import** and select "fess_log.json" to import example settings.
+1. Click **Import** and select "fess\_log.ndjson" to import example settings.
 1. Click **Dashboard**.
-1. Select "fess_log" dashboard.
+1. Select "fess\_log" dashboard.
 1. (Change the period from upper right if you want to do.)
 ## FAQ
 
@@ -32,6 +32,6 @@ Example:
 elasticsearch.url: "http://localhost:9201"
 ```
 
-#### Q. I imported "fess_log.json" but no results found.
+#### Q. I imported "fess\_log.ndjson" but no results found.
 
 A. Is there any search logs? If it still does not resolve, it may be caused by TimeZone. Please check **Settings** -> **Advanced** -> **dateFormat:tz**.