new documentation guidelines (#6325)
new documentation guidelines (#6325)

* new documentation guidelines

* Update documentation_guidelines.md

* Apply suggestions from code review

Co-authored-by: Nina Hingerl <f210d250798600f1c3c2504aa5ecb04e746850d7@users.noreply.github.com>

* Update documentation_guidelines.md

* Update documentation_guidelines.md

* Update documentation_guidelines.md

* Apply suggestions from code review

Co-authored-by: Iwona Langer <9e2709a16c0caa214cd6a45b3ea7ccd30e358fbd@sap.com>

* Update docs/documentation_guidelines.md

Co-authored-by: Iwona Langer <9e2709a16c0caa214cd6a45b3ea7ccd30e358fbd@sap.com>

Co-authored-by: Nina Hingerl <f210d250798600f1c3c2504aa5ecb04e746850d7@users.noreply.github.com>
Co-authored-by: Iwona Langer <9e2709a16c0caa214cd6a45b3ea7ccd30e358fbd@sap.com>
kyma-project/test-infra,kyma-project/test-infra,kyma-project/test-infra