Yes mine said single as well because it was from 2014. What I did was capture a screenshot of my online CRA account showing my marital status as married and my wife's name. If your husband has updated CRA with his status he could do the same.
We also included screenshots of my wife talking to my mom and my daughter, I added her to my credit cards, we sent pics of postcards that we had sent each other and my friends and family from both of us in Indonesia, we had several letters of support from both sides of family, my ex, and a mutual friend, western union reciepts from money I send her every two weeks, boarding passes and passport stamps, receipts from wedding expenses, hotels, restaurants and tourist activities, written statements by both of us, pics of visits, vacation, honeymoon, and wedding, pics of gifts she sent my daughter, and statement addressing red flags.
We also included about 40 pages of public interaction on Facebook showing friends and family liking and commenting on our posts as well as relationship statuses to show our marriage is public knowledge and everyone in our lives knows about it.