component/bt: fix nvs_get_str_or_blob length output error

components/nvs_flash/src/nvs_api.cpp

@@ -402,7 +402,7 @@ static esp_err_t nvs_get_str_or_blob(nvs_handle handle, nvs::ItemType type, cons
         return ESP_ERR_NVS_INVALID_LENGTH;
     }
 
-	*length = dataSize;
+    *length = dataSize;
     return entry.mStoragePtr->readItem(entry.mNsIndex, type, key, out_value, dataSize);
 }