Correct referenced RFC number in cgi module (GH-22827)
The quoted sentence can be found from the last paragraph of RFC 2046, Section 5.1, while the content of RFC 2026 is unrelated to this module.
diff --git a/Lib/cgi.py b/Lib/cgi.py
index 77ab703..6018c36 100755
--- a/Lib/cgi.py
+++ b/Lib/cgi.py
@@ -194,7 +194,7 @@ def parse_multipart(fp, pdict, encoding="utf-8", errors="replace"):
value is a list of values for that field. For non-file fields, the value
is a list of strings.
"""
- # RFC 2026, Section 5.1 : The "multipart" boundary delimiters are always
+ # RFC 2046, Section 5.1 : The "multipart" boundary delimiters are always
# represented as 7bit US-ASCII.
boundary = pdict['boundary'].decode('ascii')
ctype = "multipart/form-data; boundary={}".format(boundary)