Yes. At the outliner panel, find **blender File** in the menu.

![enter image description here][1]

You will see then the current file listed along with other linked files. You can edit the path by clicking over it twice with the left mouse button, or using <kbd>Ctrl</kbd>+ left mouse over it. You must rewrite the new access path yourself. Save and reload to apply the changes.
WARNING !! DO backup before! If the linked file is not found, it will result on a broken file without the link. If you save again with that error, you will loose any reference (instances to that file) forever, forcing you to relink again.


  [1]: https://i.sstatic.net/Q7zb6.png