Update example to use changed constructor function

examples/rag-wikipedia-ollama/main.go

@@ -49,7 +49,7 @@ func main() {
 	// variable to be set.
 	// For this example we choose to use a locally running embedding model though.
 	// It requires Ollama to serve its API at "http://localhost:11434/api".
-	collection, err := db.GetOrCreateCollection("Wikipedia", nil, chromem.NewEmbeddingFuncOllama(embeddingModel))
+	collection, err := db.GetOrCreateCollection("Wikipedia", nil, chromem.NewEmbeddingFuncOllama(embeddingModel, ""))
 	if err != nil {
 		panic(err)
 	}