Update _index.es.md

[ArCiGo]

Use of synonym Comportamiento and change the title of the view

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Description

Motivation and Context

Types of changes

• Change to the site (I am attaching a screenshot showing the before and after, if needed)
• Code example added (and I also added the example to all translated languages)
• Improved translation
• Added new translation (and I also added a notice to each document missing translation)

CLA

• By placing an X in the preceding checkbox, I verify that I have signed the Contributor License Agreement

[diemol]

Makes sense, thank you @ArCiGo!