fix a small regression

Signed-off-by: Christian Tzolov <[email protected]>

Author: tzolov

vector-stores/spring-ai-chroma-store/src/main/java/org/springframework/ai/chroma/vectorstore/ChromaApi.java

@@ -254,7 +254,7 @@ public void upsertEmbeddings(String tenantName, String databaseName, String coll
 		this.restClient.post()
 			.uri("/api/v2/tenants/{tenant_name}/databases/{database_name}/collections/{collection_name}/upsert",
 					tenantName, databaseName, collectionId)
-			// .headers(this::httpHeaders)
+			.headers(this::httpHeaders)
 			.body(embedding)
 			.retrieve()
 			.toBodilessEntity();