Fix typos in docs, comments and test assert messages (#14872)
diff --git a/Lib/email/headerregistry.py b/Lib/email/headerregistry.py
index 452c6ad..8d1a202 100644
--- a/Lib/email/headerregistry.py
+++ b/Lib/email/headerregistry.py
@@ -245,7 +245,7 @@
the header name and the ': ' separator.
"""
- # At some point we need to put fws here iif it was in the source.
+ # At some point we need to put fws here if it was in the source.
header = parser.Header([
parser.HeaderLabel([
parser.ValueTerminal(self.name, 'header-name'),