add: Chp 4 md 3 animation sounds

[RafaelDavisH]

Checklist:

• I have read freeCodeCamp's contribution guidelines.
• My pull request has a descriptive title (not a vague title like Update index.md)

Closes #XXXXX

[nieldakarla]

Hi @RafaelDavisH ! Estefania noticed a small detail in "ES_A1_joaquin_workplace_profile".
We can't hear clearly word "en" in the sentence:
"Joaquín Reyes es Ingeniero de Procesamiento de Lenguaje Natural en Andes Commerce."
Could you please have a look on the other take and see if it might be better option? If not, can you please try to fix this just like you did with other audios?

[RafaelDavisH]

Merged two of the recordings for this monologue. Let me know if this sounds good.

[estefaniacn]

Thank you for updating this audio, @RafaelDavisH. I listened to it and I think it sounds good now. 👍