feat(techdocs): export styles transformer

Signed-off-by: Camila Belo <camilaibs@gmail.com>

plugins/techdocs/src/reader/transformers/index.ts

@@ -15,6 +15,7 @@
  */
 
 export * from './html';
+export * from './styles';
 export * from './addBaseUrl';
 export * from './addGitFeedbackLink';
 export * from './addSidebarToggle';

plugins/techdocs/src/reader/transformers/styles/index.ts

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2022 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export { useStylesTransformer } from './transformer';