Continue fixing Ollama embedding return issue

relay/channel/ollama/dto.go

@@ -37,5 +37,5 @@ type OllamaEmbeddingRequest struct {
 type OllamaEmbeddingResponse struct {
 	Error     string    `json:"error,omitempty"`
 	Model     string    `json:"model"`
-	Embedding []float64 `json:"embeddings,omitempty"`
+	Embedding [][]float64 `json:"embeddings,omitempty"`
 }