Doc: Update get_all_named_tagged.md

[Offirmo]

Minor doc update.

[mention-bot]

@Offirmo, thanks for your PR! By analyzing the annotation information on this pull request, we identified @remojansen to be a potential reviewer

[lholznagel]

I hink the [] needs to stay there:
let weapons = kernel.getAll<Weapon[]>("Weapon"); // returns Weapon[]

[Offirmo]

@lholznagel I tested it for real. Using [] cause a typescript failure claiming a return type of Weapon[][]. Not using [] works as expected.

It also makes sense. The [] is redundant and adds nothing.

[lholznagel]

Oh okay, thanks for trying :)

[remojansen]

Thanks for this as well :)