The problem is, that is you put this on wikitree (it has 3 links)
Find A Grave, database and images (https://new.findagrave.com : accessed 16 August 2017), memorial page for John P. Smith (1882–1969), Find A Grave Memorial no. 87199557, citing Forest Lawn Cemetery, Buffalo, Erie County, New York, USA ; Maintained by Jay Boone (contributor 46889203) .
You will get this as an output (2 links are lost since only text is copied)
Find A Grave, database and images (https://new.findagrave.com : accessed 16 August 2017), memorial page for John P. Smith (1882–1969), Find A Grave Memorial no. 87199557, citing Forest Lawn Cemetery, Buffalo, Erie County, New York, USA ; Maintained by Jay Boone (contributor 46889203) .
Maybe they will change the citation before production.
With template added and citation modified a bit
{{FindAGrave|87199557}} : accessed 16 August 2017), memorial page for John P. Smith (1882–1969), citing Forest Lawn Cemetery, Buffalo, Erie County, New York, USA ; Maintained by Jay Boone (contributor 46889203) .
you get
Find A Grave Memorial #87199557 : accessed 16 August 2017), memorial page for John P. Smith (1882–1969), citing Forest Lawn Cemetery, Buffalo, Erie County, New York, USA ; Maintained by Jay Boone (contributor 46889203) .