:+1: version and update docs

CHANGES.md

@@ -1,5 +1,9 @@
 # CHANGES
 
+## v3.6.6-RC
+
+* 
+
 ## v3.6.5
 
 * Feature: Reconnect to Elasticsearch from Full Text Search Management

package.json

@@ -1,6 +1,6 @@
 {
   "name": "growi",
-  "version": "3.6.5-RC",
+  "version": "3.6.6-RC",
   "description": "Team collaboration software using markdown",
   "tags": [
     "wiki",