Update useSortBy docs (#3359)

docs/src/pages/docs/api/useSortBy.md

@@ -75,11 +75,10 @@ The following options are supported on any `Column` object passed to the `column
 - `sortType: String | Function(rowA: <Row>, rowB: <Row>, columnId: String, desc: Bool)`
   - Used to compare 2 rows of data and order them correctly.
   - If a **function** is passed, it must be **memoized**. The sortType function should return 1 if rowA is larger, and -1 if rowB is larger. `react-table` will take care of the rest.
-  - String options: `string`, `number`, `basic`, `datetime`, `alphanumeric`. Defaults to `alphanumeric`.
+  - String options: `basic`, `datetime`, `alphanumeric`. Defaults to `alphanumeric`.
   - The resolved function from the this string/function will be used to sort the this column's data.
     - If a `string` is passed, the function with that name located on either the custom `sortTypes` option or the built-in sorting types object will be used.
     - If a `function` is passed, it will be used.
-  - For more information on sort types, see Sorting
 
 ### Instance Properties