Update comments for net/data/verify_certificate_chain_unittest/

net/data/verify_certificate_chain_unittest/intermediate-eku-any-and-clientauth/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/intermediate-eku-any-and-clientauth/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/intermediate-eku-any-and-clientauth/generate-chains.py b/net/data/verify_certificate_chain_unittest/intermediate-eku-any-and-clientauth/generate-chains.py
index 1a1460a9139b8aece4784d8b0e46eb6d3b9dc930..83a5af09fcae1e26dbd2ba49a49db69a88886d3d 100755
--- a/net/data/verify_certificate_chain_unittest/intermediate-eku-any-and-clientauth/generate-chains.py
+++ b/net/data/verify_certificate_chain_unittest/intermediate-eku-any-and-clientauth/generate-chains.py
@@ -3,17 +3,15 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-"""Certificate chain with 1 intermediate and a trusted root. The intermediate
-restricts the EKU to clientAuth + any, and the target has serverAuth +
-clientAuth. Verification is expected to succeed because intermediate will match
-the "any"."""
+"""Certificate chain where the intermediate restricts the extended key usage to
+clientAuth + any, and the target sets serverAuth + clientAuth."""
 
 import sys
 sys.path += ['..']
 
 import common
 
-# Self-signed root certificate (used as trust anchor).
+# Self-signed root certificate.
 root = common.create_self_signed_root_certificate('Root')
 
 # Intermediate certificate.