Minor changes in Section 8.3.1

For better readability:

From "An automated business process can be realized by an application process." to "An automated business process can be realized by an application or technology process."

From "employee on-boarding" to "on-board employee" (usage of active voice for naming processes)

From "In an ArchiMate model, the existence of business processes is depicted." to "In an ArchiMate model, the existence of business processes is depicted, but their implementation details are often hidden."