Add SDL omissions to Aug WG (#1362)

Author: martinbonnin

agendas/2023/08-Aug/03-wg-primary.md

@@ -127,3 +127,5 @@ hold additional secondary meetings later in the month.
    - [All open action items (by last update)](https://github.com/graphql/graphql-wg/issues?q=is%3Aissue+is%3Aopen+label%3A%22Action+item+%3Aclapper%3A%22+sort%3Aupdated-desc)
    - [All open action items (by meeting)](https://github.com/graphql/graphql-wg/projects?query=is%3Aopen+sort%3Aname-asc)
 1. Update on Client Controlled Nullability proposal (15m, Calvin)
+1. SDL Omissions (10m, if any time left, Martin)
+   - [Spec edits](https://github.com/graphql/graphql-spec/pull/1036)