Update pep-0768.rst

Co-authored-by: Matt Wozniski <godlygeek@gmail.com>

Author: pablogsal

peps/pep-0768.rst

@@ -328,7 +328,7 @@ processes that can already write to arbitrary memory within your process and
 execute arbitrary code on the machine (in order to create the file containing
 the Python code to be executed).
 
-Furtermore, the execution of the code is done is gated by the interpreter's
+Furthermore, the execution of the code is gated by the interpreter's
 audit hooks, which can be used to monitor and control the execution of the code
 in sensitive environments.