tea: use installShellFiles for PowerShell completion

Author: lafrenierejm

pkgs/by-name/te/tea/package.nix

@@ -42,11 +42,9 @@ buildGoModule (finalAttrs: {
     installShellCompletion --cmd tea \
       --bash <($out/bin/tea completion bash) \
       --fish <($out/bin/tea completion fish) \
+      --powershell <($out/bin/tea completion pwsh) \
       --zsh <($out/bin/tea completion zsh)
 
-    mkdir $out/share/powershell/ -p
-    $out/bin/tea completion pwsh > $out/share/powershell/tea.Completion.ps1
-
     $out/bin/tea man --out $out/share/man/man1/tea.1
   '';