How can I overwrite taxonomy field link output?
You can do that like follows.
Go to your view and click on filed (having taxonomy) to change the settings.

Change the Formatter option to plain text. (If you choose Formatter as 'Link' that won't work even you write Rewrite Results')
Check output this filed as link and enter your path. Or you can also use'Rewrite the output  of this filed'


That's it.