DEV-2305: First Pass Refactoring "Learn" (#617)

* clean up the foundation layer

* clean up the foundation layer

* clean up the foundation layer

* clean up the foundation layer

* clean up the foundation layer

* revert refarch-id, fix admoinitions

* prettier

* fixed more admonitions

* DEV-2382: Manage Accounts Clean Up (#618)

* cleaning account chapter

* cleaning account chapter

* pty

* Update account designations and recommendations

* Add caution about cross-account AWS support limitations

* DEV-2383: Refactor Identity Chapter (#619)

* refactored identity chapter

* refactored identity chapter

* refactored identity chapter

* refactored identity chapter

* DEV-2384: Refactor Learn Network and DNS (#620)

* refactored network chapter

* refactored network chapter

* refactored network chapter

* refactored network chapter

* DEV-2385: Refactor Container Orchestration (#621)

* Refactor ecs

* refactor eks

* refactor eks

* refactor eks

* removed all custom_edit_url

* updated sidebar titles

* refarch-sync feedback

Author: milldr