docs(data-fetching): fix and improve example

[salimabsi]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

• The Refreshing Data example talks about useFetch() composable not useAsyncData() composable.
• The return value that indicates the pending status is pending not loading.

I suggest if we add some words that say we can use refresh method returned from all data fetching composable. It will help provide better understanding, the first time I read the example, I thought the refresh method is returend only by useFetch() 😉

The docs example would be like:

You can make use of the refresh() method returned from the useFetch, useLazyFetch, useAsyncData and useLazyAsyncData composables to refresh the data with different query parameters:

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[pi0]

Thanks 💯