Change the tab label of anyOf/oneOf (#1167)

* feat: support null type

* fix: fix tab label

Author: dsuket

packages/docusaurus-theme-openapi-docs/src/theme/Schema/index.tsx

@@ -116,7 +116,7 @@ const AnyOneOf: React.FC<SchemaProps> = ({ schema, schemaType }) => {
       </span>
       <SchemaTabs>
         {schema[type]?.map((anyOneSchema: any, index: number) => {
-          const label = anyOneSchema.title || `MOD${index + 1}`;
+          const label = anyOneSchema.title || anyOneSchema.type;
           return (
             // @ts-ignore
             <TabItem