python 3.9 compatibility fix, doc update

Author: mahenzon

docs/custom_sql_filtering.rst

@@ -32,11 +32,13 @@ Search for objects
 
 Request:
 
-.. sourcecode:: HTTP
 
-    GET /pictures?filter=[{"name":"picture.meta","op":"jsonb_contains","val":{"location":"Moscow"}}]
+.. sourcecode:: http
+
+    GET /pictures?filter=[{"name":"picture.meta","op":"jsonb_contains","val":{"location":"Moscow"}}] HTTP/1.1
     Accept: application/vnd.api+json
 
+
 Filter value has to be a valid JSON:
 
 .. sourcecode:: JSON

tests/test_api/test_api_sqla_with_includes.py

@@ -38,7 +38,7 @@ class Config:
     first_name: Optional[str] = None
     last_name: Optional[str] = None
     age: Optional[int] = None
-    email: str | None = None
+    email: Optional[str] = None
 
 
 class UserPatchSchema(UserBaseSchema):