Docs: fix documented type of query_ parameter of execute_query (#939)

Author: robsdedude

docs/source/api.rst

@@ -246,7 +246,7 @@ Closing a driver will immediately shut down all connections in the pool.
                 return count
 
         :param query_: cypher query to execute
-        :type query_: typing.Optional[str]
+        :type query_: typing.LiteralString
         :param parameters_: parameters to use in the query
         :type parameters_: typing.Optional[typing.Dict[str, typing.Any]]
         :param routing_:

docs/source/async_api.rst

@@ -233,7 +233,7 @@ Closing a driver will immediately shut down all connections in the pool.
                 return count
 
         :param query_: cypher query to execute
-        :type query_: typing.Optional[str]
+        :type query_: typing.LiteralString
         :param parameters_: parameters to use in the query
         :type parameters_: typing.Optional[typing.Dict[str, typing.Any]]
         :param routing_:

src/neo4j/_async/driver.py

@@ -694,7 +694,7 @@ async def example(driver: neo4j.AsyncDriver) -> int:
                 return count
 
         :param query_: cypher query to execute
-        :type query_: typing.Optional[str]
+        :type query_: typing.LiteralString
         :param parameters_: parameters to use in the query
         :type parameters_: typing.Optional[typing.Dict[str, typing.Any]]
         :param routing_:

src/neo4j/_sync/driver.py

@@ -693,7 +693,7 @@ def example(driver: neo4j.Driver) -> int:
                 return count
 
         :param query_: cypher query to execute
-        :type query_: typing.Optional[str]
+        :type query_: typing.LiteralString
         :param parameters_: parameters to use in the query
         :type parameters_: typing.Optional[typing.Dict[str, typing.Any]]
         :param routing_: