docs: updated spacing in comment

Author: jankovicgd

src/eodm/serializers.py

@@ -10,12 +10,15 @@ def id(self) -> str: ...
 
 
 def id_serializer(items: Iterable[Mappable]) -> Iterable[str]:
-    """
-    Serializes a list of Mappables (implementing to_dict()) to a list of ids
+    """Serializes a list of Mappables (implementing to_dict()) to a list of ids
+
+
     Args:
         items (Iterable[Mappable]): A collection of Mappable items
+
     Returns:
         Iterable[str]: item as a string
+
     Yields:
         Iterator[Iterable[str]]: Collection of ids
     """