101-cosmosdb-table-ru-update needs sample for account-wide throughput

[Update RU/s for Azure Cosmos Table - Table API
](https://github.com/Azure/azure-quickstart-templates/tree/master/101-cosmosdb-table-ru-update)

### Issue Details

The template names a table, which is mapped to a container AFAIK. I'm looking to apply the throughput to the whole database.

How does one compose a `name` to identify the whole database/Cosmos account?

```
"name": "[concat(variables('accountName'), '/table/', parameters('tableName'), '/throughput')]",
```

Note that there is a database-level example for "SQL mode" which uses this to identify the database. It contains `/sql/` so it doesn't look appropriate.

```
"name": "[concat(variables('accountName'), '/sql/', parameters('databaseName'), '/throughput')]",
```

Start with the 101-cosmosdb-table-ru-update template linked in the issue and compare its table-level throughput name with the SQL-mode database example shown. Investigate how the Azure Cosmos Table API identifies account-wide throughput, then update the sample so the supported name format and intended scope are clear.

Written by the indexing model from the issue text.