docs: remove references to css file

docs/docs/examples/place.mdx

@@ -8,7 +8,6 @@ Changing the placement for the ReactTooltip component.
 
 import { useState } from 'react';
 import { Tooltip } from 'react-tooltip'
-import 'react-tooltip/dist/react-tooltip.css'
 
 export const TooltipAnchor = ({ children, id, ...rest }) => {
   return (
@@ -41,7 +40,6 @@ The `place` prop and the `data-tooltip-place` attribute accept the following val
 
 ```jsx
 import { Tooltip } from 'react-tooltip';
-import 'react-tooltip/dist/react-tooltip.css';
 
 <a id="my-tooltip-anchor">◕‿‿◕</a>
 <Tooltip anchorSelect="#my-tooltip-anchor" content="Hello world from the top!" place="top" />
@@ -60,7 +58,6 @@ import 'react-tooltip/dist/react-tooltip.css';
 
 ```jsx
 import { Tooltip } from 'react-tooltip';
-import 'react-tooltip/dist/react-tooltip.css';
 
 const PLACES = ['top', 'right', 'bottom', 'left']
 const [place, setPlace] = useState(0)

docs/docs/troubleshooting.mdx

@@ -54,7 +54,7 @@ If there isn't, feel free to [submit a new issue here](https://github.com/ReactT
 
 ## The tooltip is broken/not showing up
 
-Make sure you've imported the default styling. You only need to do this once on your application, `App.jsx`/`App.tsx` is usually a good place to do it.
+Make sure you've imported the default styling. You only need to do this once on your application and only if you are using a version before `5.13.0`, `App.jsx`/`App.tsx` is usually a good place to do it.
 
 ```jsx
 import 'react-tooltip/dist/react-tooltip.css'