chore(storybook): move feature flag overview under welcome (#17685)

packages/react/src/components/FeatureFlags/overview.mdx

@@ -1,6 +1,6 @@
 import { Meta } from '@storybook/blocks';
 
-<Meta title="Experimental/Feature Flags" />
+<Meta title="Getting Started/Feature Flags" />
 
 # Feature Flags
 
@@ -117,11 +117,14 @@ Feature flags can also be enabled via the provided `enable()` mixin
 
 ## FeatureFlags Prop Update
 
-The `FeatureFlags` component has been updated to improve compatibility. The `flags` object prop is now deprecated and is replaced with individual boolean props for each feature flag.
-
-The `flags` prop will be removed in a future release. Instead, use individual boolean props for each feature flag. 
-A `featureflag-deprecate-flags-prop` codemod has been provided to help deprecate the `flags` object prop and switch to individual boolean props.
+The `FeatureFlags` component has been updated to improve compatibility. The
+`flags` object prop is now deprecated and is replaced with individual boolean
+props for each feature flag.
 
+The `flags` prop will be removed in a future release. Instead, use individual
+boolean props for each feature flag. A `featureflag-deprecate-flags-prop`
+codemod has been provided to help deprecate the `flags` object prop and switch
+to individual boolean props.
 
 ```bash
 npx @carbon/upgrade migrate featureflag-deprecate-flags-prop --write
@@ -130,9 +133,9 @@ npx @carbon/upgrade migrate featureflag-deprecate-flags-prop --write
 ```jsx
 //Before migration
 
- <FeatureFlags   
+ <FeatureFlags
   flags={{
-    'enable-v12-tile-default-icons': true, 
+    'enable-v12-tile-default-icons': true,
   }}>
     <App />
   </FeatureFlags>
@@ -143,4 +146,4 @@ npx @carbon/upgrade migrate featureflag-deprecate-flags-prop --write
   <FeatureFlags enableV12TileDefaultIcons>
     <App />
   </FeatureFlags>
-```
+```