Update the "Puffs was renamed" link
# Wrangling Untrusted File Formats Safely
([Formerly known as
-Puffs](https://groups.google.com/d/topic/puffslang/cSrH-s7UqwA/discussion):
+Puffs](https://groups.google.com/d/topic/puffslang/ZX-ymyf8xh0/discussion):
Parsing Untrusted File Formats Safely).
Wuffs is a domain-specific language and library for wrangling untrusted file
