They would not. If a goblin would only be able to reach 14 Wis then a Wood Elf would only be able to reach 15. A High Elf would also start at 14 Wis.
Do you not know how the ASIs work? 15 is the max you can put in an attribute. Wood elves get a +1, which lets them get to 16.
A goblin can get to 15, but there's no mechanical difference between 14 and 15 so you'd never do that normally aside from specific attribute boosting strategies.
So the goblin only gets a +2 to its Wis related rolls, including spell saves and the like, while the wood elf gets +3.
It isn't a huge difference but it is an average 5% higher chance to succeed at casting druid spells, which over the course of a long game can add up to a lot.
