chore(demo): updated demo stories menu (#494)

Author: makhnatkin

.storybook/manager.ts

@@ -3,4 +3,7 @@ import {themes} from './theme';
 
 addons.setConfig({
     theme: themes.light,
+    sidebar: {
+        collapsedRoots: ['docs'],
+    },
 });

.storybook/preview.ts

@@ -12,7 +12,7 @@ const preview: Preview = {
         },
         options: {
             storySort: {
-                order: ['Docs', 'Markdown Editor', ['Playground', 'Presets', '*'], '*'],
+                order: ['Playground', 'Docs', 'Extensions', ['Presets', '*'], '*'],
             },
         },
         controls: {

demo/stories/markdown/Markdown.stories.tsx

@@ -56,7 +56,7 @@ export const DefinitionList: StoryObj<typeof component> = {
 };
 
 export default {
-    title: 'Markdown Editor / Markdown examples',
+    title: 'Extensions / Markdown',
     component,
     args: args,
     parameters: {

demo/stories/playground/Playground.stories.tsx

@@ -8,7 +8,7 @@ export const Story: StoryObj<typeof component> = {};
 Story.storyName = 'Playground';
 
 const meta: Meta<PlaygroundProps> = {
-    title: 'Markdown Editor / Playground',
+    title: 'Playground',
     component: component,
     args: args,
     beforeEach: (context) => {

demo/stories/presets/Presets.stories.tsx

@@ -24,7 +24,7 @@ export const Full: StoryObj<typeof component> = {
 
 export default {
     component,
-    title: 'Markdown Editor / Presets',
+    title: 'Extensions / Presets',
     args: {
         settingsVisible: true,
         allowHTML: true,

demo/stories/yfm/YFM.stories.tsx

@@ -7,7 +7,7 @@ import {excludedControls} from '../../defaults/excluded-controls';
 import {markup} from './content';
 
 const meta: Meta<PlaygroundMiniProps> = {
-    title: 'Markdown Editor / YFM examples',
+    title: 'Extensions / YFM',
     component: PlaygroundMini,
     args: args,
     parameters: {