Update SupabaseVectorStore.ts to fix score calculating error (#2109)

Co-authored-by: Marcus Schiesser <marcus.schiesser@googlemail.com>

.changeset/dirty-dodos-doubt.md

@@ -0,0 +1,5 @@
+---
+"@llamaindex/supabase": patch
+---
+
+fix: similarity score calculating error

packages/providers/storage/supabase/src/SupabaseVectorStore.ts

@@ -168,8 +168,7 @@ export class SupabaseVectorStore extends BaseVectorStore {
 
     const similarities = searchedEmbeddingResponses.map(
       (item: SearchEmbeddingsResponse) => {
-        const distance = item.similarity || 0;
-        return 1 - distance;
+        return item.similarity;
       },
     );