Yes, as mentioned in your PER. I believe divorce or annulment will be considered under the marriage category. Just include in all your details in the email to them such as your full name, UCI #, application dates and so on.. and include in as well stating such changes as mentioned below.
This is the email of CEM.. manil.immigration @ international.gc.ca
All the best
Please inform the visa office of any changes in your application (e.g. birth or adoption of a child, marriage or common-law relationship, new occupation or employer, submission of an Arranged Employment Opinion approved by Human Resources and Skills Development Canada, change of address, change of e-mail address, change of immigration representative, etc). Please include a letter identifying what the changes are and any relevant supporting documents. If your documents are not in English or French, send a notarized (certified) translation with a copy of the originals.