incorrect notations used in activity diagram in developer guide.

[danielleloh]

expected

branch nodes should be diamond shape and not contain words inside. conditions for branch nodes should be in square brackets.

actual

branch nodes contain words inside and conditions are not in square brackets. not following standard notation may be confusing to readers.

screenshots

from textbook:

[nus-pe-bot]

Your response not required for this bug as the team has accepted the bug as it is.