[Cat Painting Workshop] Wrap CSS properties within the `code` element

[huyenltnguyen]

Description

Change:

freeCodeCamp/client/i18n/locales/english/intro.json

Line 2193 in 495006f

"In this workshop, you will build a cat painting. You'll learn about how to work with absolute positioning, the z-index property, and the transform property."

To:

"In this workshop, you will build a cat painting. You'll learn about how to work with absolute positioning, the <code>z-index</code> property, and the <code>transform</code> property."

[huyenltnguyen]

This issue is open to first-time code contributors to this repository. The file that you should be updating is linked in the original post.

We typically do not assign issues. Instead, we accept the most quality contribution followed by the one that is made first.

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