fix: updated finance-advisor-spanner to an up-to-date embedding model (…

…#1487)

gemini/sample-apps/finance-advisor-spanner/README.md

@@ -73,7 +73,7 @@ The Finvest Spanner demo application was built using:
 
    ```sql
    ALTER MODEL EmbeddingsModel SET OPTIONS (
-      endpoint = '//aiplatform.googleapis.com/projects/'YOUR PROJECT ID HERE'/locations/'YOUR SPANNER INSTANCE LOCATION HERE'/publishers/google/models/text-embedding-003'
+      endpoint = '//aiplatform.googleapis.com/projects/'YOUR PROJECT ID HERE'/locations/'YOUR SPANNER INSTANCE LOCATION HERE'/publishers/google/models/textembedding-gecko@003'
       )
       ;
    ```

gemini/sample-apps/finance-advisor-spanner/Schema-Operations.sql

@@ -1,6 +1,6 @@
 
 ALTER MODEL EmbeddingsModel SET OPTIONS (
-endpoint = '//aiplatform.googleapis.com/projects/<project-name>/locations/<location>/publishers/google/models/text-embedding-003'
+endpoint = '//aiplatform.googleapis.com/projects/<project-name>/locations/<location>/publishers/google/models/textembedding-gecko@003'
 )
 ;
 ALTER TABLE EU_MutualFunds ADD COLUMN  fund_name_Tokens TOKENLIST AS (TOKENIZE_FULLTEXT(fund_name)) HIDDEN;