Multi-app workflows: improve docs and images

[cicoyle]

Add complex scenario and explanation and fix other image to use 'child' instead of 'suborchestrator'.

[cicoyle]

Im running into issues running the hugo server locally even without my changes in this PR:

$ npm install       

up to date, audited 219 packages in 563ms

64 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities


$ hugo server
WARN  Module "github.com/dapr/docs" is not compatible with this Hugo version: Min 0.146.0 extended; run "hugo mod graph" for more information.
WARN  Module "github.com/google/docsy" is not compatible with this Hugo version: Min 0.146.0 extended; run "hugo mod graph" for more information.
Watching for changes in /Users/cassie/go/src/github.com/docs/{daprdocs,package.json,sdkdocs,translations}
Watching for config changes in /Users/cassie/go/src/github.com/docs/hugo.yaml, /Users/cassie/go/src/github.com/docs/go.mod
Start building sites … 
hugo v0.146.0 darwin/arm64 BuildDate=unknown

Built in 420 ms
Error: error building site: process: readAndProcessContent: "/Users/cassie/go/src/github.com/docs/translations/docs-zh/translated_content/zh_CN/docs/developing-applications/building-blocks/actors/actor-reentrancy.md:32:1": failed to extract shortcode: template for shortcode "tabs" not found

[cicoyle]

Just figured it out - Had to prune all my local submodules and update them. got it :thumb

[cicoyle]

I will need to resolve conflicts once this PR is merged

Im updating TestWorkflow to be BusinessWorkflow and all test refs to be 'business'

[msfussell]

@cicoyle Looking good. Left a few comments

[msfussell]

Also @cicoyle - Merged #4874 so you will have to resolve conflicts

[cicoyle]

@msfussell - all conflicts are resolved and feedback has been incorporated 👍🏻

[msfussell]

@marcduiker - Is going to update the images with the dapr theme to be consistent

[marcduiker]

@cicoyle can you update the PR with these images?

workflow-multi-app-child-workflow.png

workflow-multi-app-complex.png

[marcduiker]

LGTM