[Connector Kit] Upgrade to docusaurus 3.6

[arnoweiss]

Connector Kit upgrade preperation

Tasks

• create branch on fork

• Migrate KIT (links, sntax) to fit MDX Checker

• API Hub is linked, if needed

    {
      type: "link",
      label: "Gate API",
      href: 'https://eclipse-tractusx.github.io/api-hub/bpdm/6.3.0/gate/swagger-ui/'
    },
  

• KIT is running (local website build is succesfull)

• All versions of KIT are adapted

• Links/references are resolved

• Review done by a committer

• IP issue created and approved

• Link in kitsGallery checked

• Link in docusaurus.config -> dropdown checked

• Issue is linked as sub-issue to Upgrade docusaurus (tractus-x webpage) to newest version 3.X sig-release#985

• folder and filenames -> kebap-case