update samples & fix test

Author: Picazsoo

docs/generators/kotlin-spring.md

@@ -34,6 +34,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |documentationProvider|Select the OpenAPI documentation provider.|<dl><dt>**none**</dt><dd>Do not publish an OpenAPI specification.</dd><dt>**source**</dt><dd>Publish the original input OpenAPI specification.</dd><dt>**springdoc**</dt><dd>Generate an OpenAPI 3 specification using SpringDoc.</dd></dl>|springdoc|
 |enumPropertyNaming|Naming convention for enum properties: 'camelCase', 'PascalCase', 'snake_case', 'UPPERCASE', and 'original'| |original|
 |exceptionHandler|generate default global exception handlers (not compatible with reactive. enabling reactive will disable exceptionHandler )| |true|
+|generatePageableConstraintValidation|Generate a @ValidPageable annotation and PageableConstraintValidator class, and apply @ValidPageable to paginated operations whose 'page' or 'size' parameter has a maximum constraint. Requires useBeanValidation=true and library=spring-boot.| |false|
 |generateSortValidation|Generate a @ValidSort annotation and SortValidator class, and apply @ValidSort to paginated operations whose 'sort' parameter has enum values. Requires useBeanValidation=true and library=spring-boot.| |false|
 |gradleBuildFile|generate a gradle build file using the Kotlin DSL| |true|
 |groupId|Generated artifact package's organization (i.e. maven groupId).| |org.openapitools|

modules/openapi-generator/src/test/java/org/openapitools/codegen/kotlin/spring/KotlinSpringServerCodegenTest.java

@@ -3919,7 +3919,7 @@ public void springPaginatedNoParamsNoContext() throws Exception {
 
         // Test operation listAllPets which has no parameters except pageable
         File petApi = files.get("PetApi.kt");
-        assertFileContains(petApi.toPath(), "fun listAllPets(@Parameter(hidden = true) pageable: Pageable)");
+        assertFileContains(petApi.toPath(), "fun listAllPets(@PageableDefault(page = 0, size = 20) @Parameter(hidden = true) pageable: Pageable)");
     }
 
     @Test