Fix typo
Table name for test-drive specified in `overview/building-and-running.md` should be `numbers_mt`
@@ -59,7 +59,7 @@ mysql -h127.0.0.1 -P3307
### Avg Demo
```text
-mysql> SELECT avg(number) FROM system.numbers(10000);
+mysql> SELECT avg(number) FROM system.numbers_mt(10000);
+-------------+
| Avg(number) |
+-------------+
@@ -73,7 +73,7 @@ mysql> SELECT avg(number) FROM system.numbers(10000);
### 10 Billion Performance
```text
-mysql> SELECT avg(number) FROM system.numbers(10000000000);
+mysql> SELECT avg(number) FROM system.numbers_mt(10000000000);
+-------------------+
| Avg(number) |
+-------------------+
