[DOCS] Add link to exclude vectors from source blog

docs/reference/elasticsearch/mapping-reference/dense-vector.md

@@ -133,6 +133,10 @@ To retrieve vector values explicitly, you can use:
   }
   ```
 
+:::{tip}
+For more context about the decision to exclude vectors from `_source` by default, read the [blog post](https://www.elastic.co/search-labs/blog/elasticsearch-exclude-vectors-from-source).
+:::
+
 ### Storage behavior and `_source`
 
 By default, `dense_vector` fields are **not stored in `_source`** on disk. This is also controlled by the index setting `index.mapping.exclude_source_vectors`.

docs/reference/elasticsearch/mapping-reference/sparse-vector.md

@@ -126,6 +126,10 @@ POST my-index-2/_search
 }
 ```
 
+:::{tip}
+For more context about the decision to exclude vectors from `_source` by default, read the [blog post](https://www.elastic.co/search-labs/blog/elasticsearch-exclude-vectors-from-source).
+:::
+
 ### Storage behavior and `_source`
 
 By default, `sparse_vector` fields are not stored in `_source` on disk. This is also controlled by the index setting `index.mapping.exclude_source_vectors`.