fix(curriculum): Divided step 13 into 2 steps; updated step 13 and added step 14

[sanskriti2005]

Checklist:

• [x] I have read and followed the contribution guidelines.
• [x] I have read and followed the how to open a pull request guide.
• [x] My pull request targets the main branch of freeCodeCamp.
• [x] I have tested these changes either locally on my machine, or GitPod.

Related to #54430

[naomi-lgbt]

Once the Python team are happy with this, I'll pop in and run the sync tool to get the CI passing.

[sanskriti2005]

@naomi-lgbt Thank you so much for that. Could you guide me as to how that can be done? I plan on making regular contributions in the future and I would like to make sure I do things properly.

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