[4.x] Name attribute in xml - code style

[brianteeman]

All the <name> elements in the xml files use lowercase except for these two.

Doesn't break anything having these in a different case but it does look odd when you look at the #__extensions table

Code review should be enough

[Quy]

I have tested this item ✅ successfully on 9ff9d26

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[ChristineWk]

I have tested this item ✅ successfully on 9ff9d26

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[Quy]

RTC

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[Quy]

Thanks