Use an f-string

Co-authored-by: Ryan Mast <3969255+nightlark@users.noreply.github.com>

Author: j-t-1

peutils.py

@@ -127,7 +127,7 @@ def __generate_signature(
 
         data = pe.__data__[offset : offset + sig_length]
 
-        signature_bytes = " ".join("%02x" % ord(c) for c in data)
+        signature_bytes = " ".join(f"{ord(c):02x}" for c in data)
 
         if ep_only == True:
             ep_only = "true"