Update CLOUD-SQL-SQLSERVER.md

Author: twishabansal

CLOUD-SQL-SQLSERVER.md

@@ -14,7 +14,7 @@ To install this extension, the Gemini CLI version must be v0.6.0 or above. The v
 
 This section covers connecting to a Cloud SQL for SQL Server instance.
 
-1. **Extension Configuration**: This extension requires several settings (e.g., Project ID, Instance ID, Database Name, User, and Password). These values are gathered via prompts when you first install or link the extension:
+1. **Verify Environment Variables**: The extension requires the following environment variables to be set before the Gemini CLI is started:
 
     * `CLOUD_SQL_MSSQL_PROJECT`: The GCP project ID.
     * `CLOUD_SQL_MSSQL_REGION`: The region of your Cloud SQL instance.
@@ -90,4 +90,4 @@ The value can be verified by the user using the `gemini extensions config cloud-
 
 **ALWAYS** use the full table name format, `DATABASE_NAME.SCHEMA_NAME.TABLE_NAME` in the generated SQL when using the `execute_sql` skill.
 * Default to using "dbo" for the schema name.
-* Use command `echo $CLOUD_SQL_MSSQL_DATABASE` to get the current database value.
+* Use command `echo $CLOUD_SQL_MSSQL_DATABASE` to get the current database value.