Correct wording of warning message

[cie]

This warning message is a bit misleading, the template[x-if] tag requires a single child element, not a single child node (because text nodes are also nodes)

• It can have some empty text nodes around the single child element
• It's not good if it has a single text node as a child.

[HugoDF]

Do you have code samples of where the message would have been inaccurate?

[HugoDF]

Found one on Discord

<div x-data="{texts: ['hi', 'bye', 'sup']}">
    <template x-for="text in texts">
        Hola
        <div x-text="text"></div>
    </template>
</div>

Guess this PR makes sense

[cie]

@HugoDF I thought about this case:

<div x-data="{greet: true}">
    <template x-if="greet">
        Hola
    </template>
</div>

[HugoDF]

Yep thanks @cie

This change makes sense, I think @calebporzio will merge it when he gets a chance

[calebporzio]

Thanks @cie!