translating how to contribute section.

[maudel]

Translation:
Contributing

• How to Contribute

@alejandronanez, @carburo, @dmoralesm
Please let me know if everything is looking good.

[carburo]

Hello! Thank you for your contribution.
Check this before doing a full review.

• It would be better if you could change your lines to match the original. It makes our lives easier when reviewing.
• I noticed you are using "usted" conjugations for the 2nd person singular, you should change it to "tú" as described in the style guide.
• Don't add the nav file. It is already translated.

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[netlify]

Deploy preview for es-reactjs ready!

Built with commit ef3a998

https://deploy-preview-153--es-reactjs.netlify.com

[carburo]

Hi! Thank you again for your contribution. I made some suggestions. Many of them related to the use of «usted» (Check our style guide for more information on this matter). Let us know if you need help with this.

[carburo]

Hello @maudel. It has been 13 days since the first request for changes. Are you able to check it? Let me know if you don't have enough time. I could help in editing so this can be merged.

[carburo]

I applied the changes myself. I think this is good to go. Thanks!