[no ci] Fix missing docs attribute

gwynne · gwynne · commit c5737e8a54c5 · 2023-08-07T23:35:42.000-05:00
diff --git a/Sources/PostgresNIO/Docs.docc/index.md b/Sources/PostgresNIO/Docs.docc/index.md
@@ -1,5 +1,9 @@
 # ``PostgresNIO``
 
+@Metadata {
+    @TitleHeading(Package)
+}
+
 🐘 Non-blocking, event-driven Swift client for PostgreSQL built on SwiftNIO.
 
 ## Overview
