This is a special situation. Yes, ordinarily this text would be blocked 4 cells to the right of the previous line when transcribing a formal letter into braille.
The sample demonstrates guideline 9.7.2. This guideline allows deviation from the normal braille format when the purpose of the exercise is to teach how proper PRINT format is used in correspondence. Only when the print example is teaching the format is this guideline followed. In all other cases, standard braille formatting is used.