Revert integer change

Author: ralfhandl

versions/3.1.1.md

@@ -213,8 +213,8 @@ The formats defined by the OAS are:
 
 | [`type`](#data-types) | [`format`](#data-type-format) | Comments                     |
 | -------------------- | --------------------------- | ---------------------------- |
-| `number`             | `int32`                     | signed 32 bits               |
-| `number`             | `int64`                     | signed 64 bits (a.k.a long)  |
+| `integer`            | `int32`                     | signed 32 bits               |
+| `integer`            | `int64`                     | signed 64 bits (a.k.a long)  |
 | `number`             | `float`                     |                              |
 | `number`             | `double`                    |                              |
 | `string`             | `password`                  | A hint to obscure the value. |