[docs] Add Toggle Selection Control to 'Migration From v0.x' Document (…

…#12149)

* [docs] Add Toggle Selection Control to Migration From v0.x Document

* Update migration-v0x.md

docs/src/pages/guides/migration-v0x/migration-v0x.md

@@ -129,6 +129,22 @@ This will apply a change such as the following:
 +<ListSubheader>Sub Heading</ListSubheader>
 ```
 
+### Toggle
+
+```diff
+-import Toggle from 'material-ui/Toggle';
++import Switch from '@material-ui/core/Switch';
+
+-<Toggle
+-  toggled={this.state.checkedA}
+-  onToggle={this.handleToggle}
+-/>
++<Switch
++  checked={this.state.checkedA}
++  onChange={this.handleSwitch()}
++/>
+```
+
 ### To be continued…
 
 Have you successfully migrated your app, and wish to help the community?