Fix filename of htmlangElement test file

[vielle-dev]

• there was an extra L in the name
• i cloned the project to have a nosey and it annoyed me lol

[vielle-dev]

okay full clarity im still getting to grips w git commiting when theres like multiple branches n stuff i have no idea why its added the stuff in here and how to fix it orz
ill drop the <event-> commit message here and if u can like. merge parts of a big ol commit do that ig?
(also: ik the event component is probably not great and also has no test coverage if u want ill go and try make em tommorow :3)

Add <event-> component

on attribute refers to the event which is triggered (click, blur, etc)
target attribute refers to the elements which will recive the event listener (css selector: #button, button.primary, a, etc)

children of the component are triggered whenever the event listener fires and on first page load (the later is an unintentional side effect which idk how to fix lol) (its late and idk web components well)