Family members can be added to the application at any time during the process, including after the visa is issued, but prior to obtaining permanent resident status.
Until you land in Canada and are admitted as a PR, you can add your spouse to your application. However, if you have landed and admitted as a PR, then you will have to sponsor your spouse by filing a spousal sponsorship application.
IRCC has clarified this at :
https://www.canada.ca/en/immigration-refugees-citizenship/corporate/publications-manuals/operational-bulletins-manuals/permanent-residence/express-entry/assessing-electronic-application-on-section-a11-2.html
Hope this answers your question.
Try and submit the documents requested as soon as possible.
Congratulations on your wedding!!