Add missing imports to docs mdx files

packages/docs/src/guides/accessibility.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Accessibility" />
 
 # Accessibility

packages/docs/src/guides/client-side-rendering.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Client-side" />
 
 # Client-side rendering

packages/docs/src/guides/direct-manipulation.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Direct manipulation" />
 
 # Direct manipulation

packages/docs/src/guides/internationalization.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Internationalization" />
 
 # Internationalization

packages/docs/src/guides/multi-platform-apps.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Multi-platform" />
 
 # Multi-platform applications

packages/docs/src/guides/server-side-rendering.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Server-side" />
 
 # Server-side rendering

packages/docs/src/guides/style.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Style" />
 
 # Style

packages/docs/src/guides/unstable.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Unstable uses" />
 
 # Unstable APIs

packages/docs/src/guides/web-recipes.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Guides|Web recipes" />
 
 # Web recipes

packages/docs/src/introduction.stories.mdx

@@ -1,3 +1,5 @@
+import { Meta } from '@storybook/addon-docs/blocks';
+
 <Meta title="Overview|Getting started" />
 
 # Getting started