Update compound_stmts.rst

Author: Yash-Vijay29

Doc/reference/compound_stmts.rst

@@ -157,7 +157,7 @@ The :keyword:`for` statement is used to iterate over the elements of a sequence
    for_stmt: "for" `target_list` "in" `starred_expression_list` ":" `suite`
            : ["else" ":" `suite`]
 
-The  :token:`~python-grammar:starred_expression_list`  expression is evaluated once;
+The :token:`~python-grammar:starred_expression_list` expression is evaluated once;
 it should yield an :term:`iterable` object.  An :term:`iterator` is created for that iterable.
 The first item provided by the iterator is then assigned to the target list using the standard
 rules for assignments (see :ref:`assignment`), and the suite is executed.  This