Update odata-query-options.md

Added some clarifications for points where I was confused

Author: Maismaus

content/en/docs/refguide9/modeling/integration/odata-services/published-odata-services/odata-query-options.md

@@ -55,7 +55,7 @@ This table describes how to pass values for different attribute types:
 | --- | --- |
 | String | Enclosed in single quotes (for example, `'John'`) |
 | Enumeration | The enumeration member name between single quotes, prefixed with the enum type (for example, `DefaultNamespace.PrimaryColor'Red'`). OData v4.01 syntax without the qualified enum type name is not supported |
-| Datetime | For OData 4: a plain value (for example, `2021-12-31`). For OData 3: Preceded with `datetime` and enclosed in single quotes (for example, `datetime'2021-12-31'` or `datetime'<epoch value here>'`) |
+| Datetime | For **OData 4**: a plain value (for example, `2021-12-31`). For **OData 3**: Preceded with `datetime` and enclosed in single quotes (for example, `datetime'2021-12-31'` or `datetime'<epoch value here>'`) |
 | Other | Plain value (for example, 15) |
 
 ### Comparison Operators
@@ -101,7 +101,7 @@ Filters can be combined with `and`, `or`, `not`, and `()`. For example: `?$filte
 
 ### Filtering by Association
 
-You can filter on attributes of an associated entity. The way you do this depends on whether the association exposes one object or a list of objects.
+You can filter on attributes of an associated entity. The way you do this depends on whether the association exposes one object or a list of objects. You do not need to include the association name in the filter, only the entity name of the associated entity.
 
 | Type | Example |
 | --- | --- |