minor #555 [Demo] Configure store explicitly for SimilaritySearch (OskarStark)

This PR was merged into the main branch.

Discussion
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[Demo] Configure store explicitly for `SimilaritySearch`

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | no
| Issues        | --
| License       | MIT

Commits
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803eceb [Demo] Configure store explicitely for `SimilaritySearch`

Author: OskarStark

demo/config/packages/ai.yaml

@@ -79,5 +79,6 @@ services:
     Symfony\AI\Agent\Toolbox\Tool\Wikipedia: ~
     Symfony\AI\Agent\Toolbox\Tool\SimilaritySearch:
         $vectorizer: '@ai.vectorizer.openai_embeddings'
-    
+        $store: '@ai.store.chroma_db.symfonycon'
+
     Symfony\AI\Store\Document\Transformer\TextTrimTransformer: ~