message: Fix style in README.md
diff: @@ -18,7 +18,7 @@ for installation instructions.
  Add the item to the Sidebar:
  -```ts
  +```tsx
  import {Settings as SidebarSettings} from '@backstage/plugin-user-settings';
  <SidebarPage>
  @@ -30,18 +30,14 @@ import {Settings as SidebarSettings} from '@backstage/plugin-user-settings';
  Add the page to the App routing:
  -```ts
  +```tsx
  import { UserSettingsPage } from '@backstage/plugin-user-settings';
  const AppRoutes = () => (
  <Routes>
  - <Route path = "/settings"
  -element = { < UserSettingsPage / >
  -}
  -/>
  + <Route path="/settings" element={<UserSettingsPage />} />
  </Routes>
  -)
  -;
  +);
  ```
  ### Props
  @@ -53,7 +49,7 @@ displayed in the "Authentication Providers" tab.
  If you want to supply your own custom list of Authentication Providers, use the `providerSettings` prop:
  -```ts
  +```tsx
  const MyAuthProviders = () => (
  <ListItem>
  <ListItemText primary="example" />
  @@ -65,14 +61,10 @@ const AppRoutes = () => (
  <Routes>
  <Route
  path="/settings"
  -element = { < SettingsRouter
  -providerSettings = { < MyAuthProviders / >
  -}
  -/>}
  + element={<SettingsRouter providerSettings={<MyAuthProviders />} />}
  />
  </Routes>
  -)
  -;
  +);
  ```
  > **Note that the list of providers expects to be rendered within a MUI [`<List>`](https://material-ui.com/components/lists/)**
  