improve wording of a phrase in migration notes

diff --git a/doc/build/changelog/migration_21.rst b/doc/build/changelog/migration_21.rst
index aeef1393c67ba8cbdffb9f298e71029fee78d801..193ef56690a2e82795ccee5904207a2ed477e7da 100644 (file)
--- a/doc/build/changelog/migration_21.rst
+++ b/doc/build/changelog/migration_21.rst
@@ -840,8 +840,8 @@ directly.
 
 Custom extension can be created by subclassing the class
 :class:`sqlalchemy.sql.SyntaxExtension`.
-For example, to create render the ``INTO OUTFILE`` clause of select
-supported by MariaDB and MySQL, can be implimented using syntax extensions
+For example, support for the ``INTO OUTFILE`` clause of a select
+supported by MariaDB and MySQL, can be implemented using syntax extensions
 as follows::
 
     from sqlalchemy.ext.compiler import compiles