Updating page_loading_strategy.es.md

[abhishek-malani-zz]

Updating page loading strategy in spanish

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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)
• 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)

Checklist

• I have read the contributing document.
• I have used hugo to render the site/docs locally and I am sure it works.

[CLAassistant]

All committers have signed the CLA.

[harsha509]

Thank you @abhishek-malani !