Docs are out of date for v4

[gsteel]

For some reason the v4 docs aren't getting published. Pointers appreciated

[gsteel]

CC @froschdesign

[froschdesign]

For some reason, the pages for version 4 are not being integrated or recognised by MkDocs:

INFO    -  The following pages exist in the docs directory, but are not included in the "nav" configuration:
  - migration/preparing-for-v3.md
  - v4/api.md
  - v4/creating-middleware.md
  - v4/error-handlers.md
  - v4/executing-middleware.md
  - v4/install.md
  - v4/intro.md
  - v4/middleware.md
  - v4/migration.md
  - v4/usage.md

https://github.com/laminas/laminas-stratigility/actions/runs/9981173712/job/28180097748#step:3:42

[gsteel]

Yes… I saw that, but the pages are in the nav configuration: https://github.com/laminas/laminas-stratigility/blob/4.1.x/mkdocs.yml

[froschdesign]

I can create the documentation locally and everything is there. 🤷‍♂️

[froschdesign]

Fixed with #61

[froschdesign]

It looks like the different indents in mkdocs.yml file are causing some problems.