fix azure blobs filtering

Author: KSDaemon

packages/cubejs-base-driver/src/BaseDriver.ts

@@ -805,7 +805,7 @@ export abstract class BaseDriver implements DriverInterface {
 
     const csvFiles: string[] = [];
     const containerClient = blobServiceClient.getContainerClient(container);
-    const blobsList = containerClient.listBlobsFlat({ prefix: `${tableName}/` });
+    const blobsList = containerClient.listBlobsFlat({ prefix: `${tableName}` });
     for await (const blob of blobsList) {
       if (blob.name && (blob.name.endsWith('.csv.gz') || blob.name.endsWith('.csv'))) {
         const starts = new Date();