Alternative solution to uppercase/lowercase mismatch in LinearSoftmax.svelte (#37, #48)

[nomennominatur]

General question up front: Do you prefer 'issue' or 'PR' ?

Since there are pending issues #48 and pending PR #37 playaswd:fix-typos I did not use PR.

Problem:
On case sensitive operating systems (e.g. linux), the lines in src/components/LinearSoftmax.svelte

24:	import SoftmaxPopover from './popovers/SoftmaxPopover.svelte';
25:	import LogitWeightPopover from './popovers/LogitWeightPopover.svelte';

conflict with the folder name

transformer-explainer/src/components/Popovers

leading to an error

Failed to load url ./popovers/SoftmaxPopover.svelte (resolved id: ./popovers/SoftmaxPopover.svelte) in /<example-path>/transformer-explainer/src/components/LinearSoftmax.svelte. Does the file exist?

Proposed solution:
Rename folder "Popovers" to "popovers".
[Tested on LinuxMint 22.2 (zara) with npm 10.8.2 and node 20.19.5]
This seems easier and more consistent with general folder naming convention in the project, than changing multiple code targets.

General remark: Thanks & kudos! This is, by far, the best didactic visualization of transformer architecture that I have come across...