[Docs] Improve semantic_text updates documentation organization (#137340)

* Move script update restrictions section for consistency

* Update docs/reference/elasticsearch/mapping-reference/semantic-text.md

Co-authored-by: Liam Thompson <[email protected]>

* Update docs/reference/elasticsearch/mapping-reference/semantic-text.md

Co-authored-by: Liam Thompson <[email protected]>

* Update docs/reference/elasticsearch/mapping-reference/semantic-text.md

Co-authored-by: Liam Thompson <[email protected]>

---------

Co-authored-by: Liam Thompson <[email protected]>

Author: mridula-s109

docs/reference/elasticsearch/mapping-reference/semantic-text.md

@@ -437,8 +437,16 @@ When updating documents that contain `semantic_text` fields, it’s important to
 
 If you want to avoid unnecessary inference and keep existing embeddings:
 
-    * Use **partial updates through the Bulk API**.
-    * Omit any `semantic_text` fields that did not change from the `doc` object in your request.
+ * Use **partial updates through the Bulk API**.
+ * Omit any `semantic_text` fields that did not change from the `doc` object in your request.
+
+### Scripted updates
+
+For indices containing `semantic_text` fields, updates that use scripts have the
+following behavior:
+
+- ✅ **Supported:** [Update API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-update)
+- ❌ **Not supported:** [Bulk API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-bulk-1). Scripted updates will fail even if the script targets non-`semantic_text` fields.
 
 ## Returning semantic field embeddings in `_source`
 
@@ -578,18 +586,6 @@ PUT my-index-000004
 ```
 % TEST[skip:Requires inference endpoint]
 
-## Updates to `semantic_text` fields [update-script]
-
-For indices containing `semantic_text` fields, updates that use scripts have the
-following behavior:
-
-* Are supported through
-  the [Update API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-update).
-* Are not supported through
-  the [Bulk API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-bulk-1)
-  and will fail. Even if the script targets non-`semantic_text` fields, the
-  update will fail when the index contains a `semantic_text` field.
-
 ## `copy_to` and multi-fields support [copy-to-support]
 
 The semantic_text field type can serve as the target