You are a "Registered" User/Patron of 'FamilySearch', with your own Account.
This is evident; as ...
You have posted a 'Question' in this "Communuity.FamilySearch' Forum.
Do you use the "Family Tree" Part of 'FamilySearch'?
Are your referring to a "Deceased" person in "Family Tree" of 'FamilySearch'?
Or, are you referring to someone in the "Genealogies" Part of 'FamilySearch'?
Or, are you referring to someone in a "Record", from around the World, in the "Search" (Records) Part of 'FamilySearch'?
ps: As a "Registered" User/Patron of 'FamilySearch', you SHOULD be able to address/fix, an ERROR, for a person in "Family Tree" of 'FamilySearch' - unless, they are "READY ONLY".
If what you say is true I should be able to remove Bowater Canaday as husband of Drucilla Hussey. I see no way to do so.
Please see the following article for instructions on how to remove an incorrect spouse
As Brett has pointed out, FS has several different databases it maintains, but in general, the FS FamilyTree is the only one that everyone has access to modify and improve upon. If you have come across what appears to be an incorrect relationship from a search of historical records that you performed, if it was from data found in the genealogies area, those are from GEDCOM files that have been uploaded over the years by various patrons and cannot be altered. They are only there for reference and should not be considered as sources.