[flutter_local_notifications] Documentation: updated dead link

[zopagaduanjr]

Icon design status bar's previous link redirects to material design > 404.

replaced it with this archived icon_design_status_bar page

[MaikuB]

Thanks for the fix. As the page being linked to appears to be archived, could a note to mention this perhaps added too? I believe were meant to have redirects in place to point the latest version and the developer documentation currently still points to the same link the readme currently has (see https://developer.android.com/studio/write/image-asset-studio#notification). With this mind, the issue may be something Google had missed when updating their docs too

[MaikuB]

Thanks for making the change. Will merge this in. For future reference, in case you intend to contribute more to OSS, I suggest you create a separate branch in your fork rather than committing your changes to the default branch (main/master). This makes it easier to keep your fork to to date when the original/upstream repo/branch has changes and you want to keep your fork up to date