parser_generator.py typo - keywods -> keywords (python#135014)

Author: chemelnucfin

Tools/peg_generator/pegen/parser_generator.py

@@ -56,7 +56,7 @@ def visit_NamedItem(self, item: NamedItem) -> None:
 
 
 class KeywordCollectorVisitor(GrammarVisitor):
-    """Visitor that collects all the keywods and soft keywords in the Grammar"""
+    """Visitor that collects all the keywords and soft keywords in the Grammar"""
 
     def __init__(self, gen: "ParserGenerator", keywords: Dict[str, int], soft_keywords: Set[str]):
         self.generator = gen