testing/git-machete: improve completion installation

testing/git-machete/APKBUILD

@@ -29,9 +29,9 @@ package() {
 	python3 setup.py install --prefix=/usr --root="$pkgdir"
 
 	install -Dm0644 "$builddir"/completion/git-machete.completion.bash \
-		-t "$pkgdir/usr/share/bash-completion/completions"
+		"$pkgdir/usr/share/bash-completion/completions/git-machete"
 	install -Dm0644 "$builddir"/completion/git-machete.completion.zsh \
-		-t "$pkgdir/usr/share/zsh/site-functions"
+		"$pkgdir/usr/share/zsh/site-functions/_git-machete"
 	install -Dm0644 "$builddir"/completion/git-machete.fish \
 		-t "$pkgdir/usr/share/fish/completions"
 }