Update aloc_usage.md - fixed table

docs/aloc_usage.md

@@ -88,7 +88,7 @@ like `s1.loc[:] = s2` do. See also the [cookbook](/docs/cookbook.md#broadcast-ar
 *Indexer Table*
 
 | example | type | on | like `.loc` | handling |
-| ------ | ------ | ------ |------ |
+| ------ | ------ | ------ |------|------ |
 |[Column indexer](#select-columns-gracefully)| 
 | `.aloc[any, ['a']]`         | scalar               | columns |no| select graceful |
 | `.aloc[any, 'b':'z']`       | slice                | columns |yes| slice |