Update references to TACo

Author: cygnusv

README.rst

@@ -21,7 +21,7 @@ cross-platform functionality, including web and mobile applications.
 
 
 You can utilize any publicly available Porter to interface with the
-Threshold Network. Alternatively, some application developers may choose to
+TACo Network. Alternatively, some application developers may choose to
 operate their own.
 
 Running a Porter Instance

SECURITY.md

@@ -13,6 +13,6 @@ We are happy to work together to use a more secure medium, such as Signal.
 Email security@nucypher.com and we will coordinate a communication channel that we're both comfortable with.
 
 A great place to begin your research is by working on our testnet.
-Please see our [documentation](https://docs.nucypher.com) to get started.
+Please see our [documentation](https://docs.taco.build) to get started.
 We ask that you please respect network machines and their owners.
 If you find a vulnerability that you suspect has given you access to a machine against the owner's permission, stop what you're doing and immediately email security@nucypher.com.