Update comments for net/data/verify_certificate_chain_unittest/

net/data/verify_certificate_chain_unittest/intermediate-lacks-basic-constraints/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/intermediate-lacks-basic-constraints/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/intermediate-lacks-basic-constraints/generate-chains.py b/net/data/verify_certificate_chain_unittest/intermediate-lacks-basic-constraints/generate-chains.py
index b1219afa6240e940468c12615319a890b7c86236..c258acb2ad5f8a24b2ddf3855eb710942586e9cd 100755
--- a/net/data/verify_certificate_chain_unittest/intermediate-lacks-basic-constraints/generate-chains.py
+++ b/net/data/verify_certificate_chain_unittest/intermediate-lacks-basic-constraints/generate-chains.py
@@ -3,16 +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
-lacks the basic constraints extension, and hence is expected to fail validation
-(RFC 5280 requires v3 signing certificates have a BasicConstaints)."""
+"""Certificate chain where the intermediate lacks a basic constraints
+extension (yet is used to issue another certificate)."""
 
 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 that lacks basic constraints.