put semantic API changes under backward incompat IQSS#8763

doc/release-notes/5.11-release-notes.md

@@ -88,7 +88,9 @@ See the [Database Settings](https://guides.dataverse.org/en/5.11/installation/co
 
 ## Notes for Developers and Integrators
 
-In the "Backward Incompatibilities" section below, note changes in the Semantic Metadata API.
+See the "Backward Incompatibilities" section below.
+
+## Backward Incompatibilities
 
 ### Semantic API Changes
 
@@ -106,8 +108,6 @@ and
 
 `https://dataverse.org/schema/<block name>/<Field name>`.
 
-## Backward Incompatibilities
-
 ### Create Dataset API Requires Content-type Header (Since 5.6)
 
 Due to a code change introduced in Dataverse 5.6, calls to the native API without the `Content-type` header will fail to create a dataset. The API Guide has been updated to indicate the necessity of this header: https://guides.dataverse.org/en/5.11/api/native-api.html#create-a-dataset-in-a-dataverse-collection