Update CONFIGURATION.md

Author: krassowski

CONFIGURATION.md

@@ -78,6 +78,6 @@ This server can be configured using the `workspace/didChangeConfiguration` metho
 | `pylsp.rope.ropeFolder` | `array` of unique `string` items | The name of the folder in which rope stores project configurations and data.  Pass `null` for not using such a folder at all. | `null` |
 | `pylsp.signature.formatter` | `string` (one of: `'black'`, `'ruff'`, `None`) | Formatter to use for reformatting signatures in docstrings. | `"black"` |
 | `pylsp.signature.include_docstring` | `boolean` | Include signature docstring. | `true` |
-| `pylsp.signature.line_length` | `number`  | Maximum line length in signatures. | `88` |
+| `pylsp.signature.line_length` | `integer`  | Maximum line length in signatures. | `88` |
 
 This documentation was generated from `pylsp/config/schema.json`. Please do not edit this file directly.