fix readme

[dmil]

specify that it is a demo site

[louis-costa]

I don't know if there are standard ways to do so. I'll ask ChatGPT

[louis-costa]

I'm taking on this task

[louis-costa]

Here's a proposal:

in HTML:

    '<h1>Dhrumil's Simple Website</h1>
    <h2>This is a demo version <h2>'

--> the point is to have a specific font size for Heading style 2. In the styles.css file: Add a modification to the h2 style to make it yellow:

'h2 {
    color: yellow;
}'