If you have already filed your return, you will have to wait until it is processed by CRA and that you receive the NOA.
Then, you can Refile the return and remove the double entries > Keep the T5008 slips only and remove the same income reported in the Capital Gain Profile.
Please check the link below to follow the process of Refiling your return:
https://turbotax.community.intuit.ca/community/tax-return-amendment/help/i-have-filed-my-tax-return-...
Check this CRA link for the Refile exclusions in case you are reporting more changes:
https://www.canada.ca/en/revenue-agency/services/e-services/e-services-businesses/refile-online-t1-a...
I hope this was helpful
