docs: Fix code snippets syntax highlighting & some refactoring

src/bootstrap/TextInput.md

@@ -3,8 +3,9 @@ using in foris forms.
 
 All additional `props` are passed to the `<input type="text">` HTML component.
 
-```js
+```jsx
 import { useState } from "react";
+
 const [value, setValue] = useState("Bla bla");
 
 <TextInput