chore(docs): add missing underscore in enum value

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+*-*
+
 ## [4.32.0] - 2023-10-27
 ### `jsonschema-generator`
 #### Added
@@ -783,6 +785,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Indicate a number's "exclusiveMaximum" according to `@DecimalMax` or `@Negative`
 
 
+[Unreleased]: https://github.com/victools/jsonschema-generator/compare/v4.32.0...HEAD
 [4.32.0]: https://github.com/victools/jsonschema-generator/compare/v4.31.1...v4.32.0
 [4.31.1]: https://github.com/victools/jsonschema-generator/compare/v4.31.0...v4.31.1
 [4.31.0]: https://github.com/victools/jsonschema-generator/compare/v4.30.0...v4.31.0

slate-docs/source/includes/_main-generator.md

@@ -229,7 +229,7 @@ configBuilder.without(
  </tr>
  <tr>
   <td rowspan="2" style="text-align: right">23</td>
-  <td colspan="2"><code>Option.NULLABLE_ARRAY ITEMS_ALLOWED</code></td>
+  <td colspan="2"><code>Option.NULLABLE_ARRAY_ITEMS_ALLOWED</code></td>
  </tr>
  <tr>
   <td>The schema <code>type</code> for the items in an array (in case of a field's value or method's return value being a container/array) allows <code>null</code>, if the corresponding configuration explicitly says so. Otherwise, they're still deemed not null-able by default.</td>