Here is a quote from macworld:
For MacBook notebooks made from 2013, Apple adopted a much faster version of SSD that it refers to as a PCIe-attached Flash Drive. While these can still be removed from the laptop, neither Apple nor any third-party vendor will sell you a replacement.
I'm not sure that you will be able to upgrade the SSD in your mac. I'm not 100% but I would definitely recommend that you look into it further before you buy the hardware only to find that it won't fit. The one that you have linked will almost certainly not work. You may be able to find some but it will likely be very expensive.