Wpb 17321 wiab demo docs update (#86)

* wpb-21521 updated wire-server module

* update documentation for demo-wiab for recent changes in wpb-17321

* update redundant parts in demo-wiab

* fix wpb-17321: update docs for secrets management and cert_manager_networking example

* fix: update repo_url to point to wire-server

* fix: wpb-17321 update the documentation and diagram for demo-wiab

* fix: update the wire-server submodule

Author: mohitrajain

mkdocs.yml

@@ -1,7 +1,7 @@
 site_name: Wire Docs
 docs_dir: src
 site_url: "https://docs.docs.com"
-repo_url: https://github.com/wireapp/wire-docs
+repo_url: https://github.com/wireapp/wire-server
 edit_uri: edit/main/src/
 site_author: Wire Authors
 site_description: "Wire Documentation"