docs(LabelExamplePointingColored): Remove basic property from labels

[ahacop]

Prior to this commit, label text was illegible as both the text and label background color were red.

Before:

After:

[welcome]

💖 Thanks for opening this pull request! 💖

Here is a list of things that will help get it across the finish line:

• Run yarn lint locally to catch formatting errors. This will fix some errors automatically, commit and push any changes.
• Run yarn test locally to catch errors. This ensures all components still behave as they should.
• Run yarn start to run the doc site locally and try a few pages, ensuring everything is in good working order.
• Include tests when adding/changing behavior.

We get a lot of pull requests on this repo, so please be patient and we will get back to you as soon as we can.

[codecov-io]

Codecov Report

Merging #3209 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3209   +/-   ##
=======================================
  Coverage   99.92%   99.92%           
=======================================
  Files         169      169           
  Lines        2790     2790           
=======================================
  Hits         2788     2788           
  Misses          2        2

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 201ff7a...3ffb556. Read the comment docs.

[layershifter]

https://semantic-ui.com/elements/label.html#pointing

https://github.com/Semantic-Org/Semantic-UI/blob/master/RELEASE-NOTES.md
Semantic-Org/Semantic-UI#6440

This was fixed in SUI 2.4 and already fixed in master branch. The next release of SUIR will also add new features from SUI 2.4, however feel free to use the latest version of SUI, it's fully compatible.