Fix typo in the dataclasses's doc (GH-8896) (GH-8897)

(cherry picked from commit 075b3c3)

Co-authored-by: Daniel Dương <[email protected]>

Author: 2 people

Doc/library/dataclasses.rst

@@ -448,7 +448,7 @@ parameters to the generated :meth:`__init__` method, and are passed to
 the optional :meth:`__post_init__` method.  They are not otherwise used
 by dataclasses.
 
-For example, suppose a field will be initialzed from a database, if a
+For example, suppose a field will be initialized from a database, if a
 value is not provided when creating the class::
 
   @dataclass