fix(api-doc): 修复全局自定义配置无法被覆盖的问题

continew-starter-api-doc/src/main/java/top/continew/starter/apidoc/autoconfigure/SpringDocAutoConfiguration.java

@@ -115,6 +115,7 @@ public class SpringDocAutoConfiguration implements WebMvcConfigurer {
      * 全局自定义配置（全局添加鉴权参数）
      */
     @Bean
+    @ConditionalOnMissingBean
     public GlobalOpenApiCustomizer globalOpenApiCustomizer(SpringDocExtensionProperties properties) {
         return openApi -> {
             if (null != openApi.getPaths()) {