http/html stubtest fixes (#5208)

stdlib/html/parser.pyi

@@ -3,7 +3,7 @@ from typing import List, Optional, Tuple
 
 class HTMLParser(ParserBase):
     def __init__(self, *, convert_charrefs: bool = ...) -> None: ...
-    def feed(self, feed: str) -> None: ...
+    def feed(self, data: str) -> None: ...
     def close(self) -> None: ...
     def reset(self) -> None: ...
     def getpos(self) -> Tuple[int, int]: ...