Improve query language documentation

Change-Id: I8ff93e7c5bf328706c203727da54f434dc4942ea
diff --git a/templates/doc/navigation.json b/templates/doc/navigation.json
index 12e4683..eff474e 100644
--- a/templates/doc/navigation.json
+++ b/templates/doc/navigation.json
@@ -73,6 +73,10 @@
         "id" : "cql"
       },
       {
+        "title" : "FCSQL",
+        "id" : "fcsql"
+      },
+      {
         "title" : "Regular Expressions",
         "id" : "regexp"
       },