add changes to how_to_document file

Author: VivianBass

how_to_document.md

@@ -47,6 +47,7 @@ Here we are indicating the title, who is its parent, what is the position that i
 - For users -> `usage.md`
     - What are data models? -> `what_are_data_models.md`
     - GraphQL & API -> `GraphQL_intro.md`
+    - GraphQL filtering -> `jq_jsonpath.md`
     - Graphical UI -> `SPA_howto.md`
 - Quick start -> `quickstart.md`
 - Getting started -> `setup_root.md`

jq_jsonpath.md

@@ -1,11 +1,11 @@
 ---
 layout: default
-title: GraphQL filtering using jq and JsonPath
+title: GraphQL filtering
 parent: For users
 nav_order: 3
-permalink: /usage/graphql/filtering
+permalink: /usage/filtering
 ---
-# GraphQL & API
+# GraphQL filtering using jq and JsonPath
 {: .no_toc }
 
 ## Table of contents