fixed powershell output

CHANGELOG.md

@@ -11,6 +11,7 @@ Dates are given in YYYY-MM-DD format.
 - [`xdg-mime`] no longer uses git version
 - Output is sorted: Files that couldn't be read, then files with no known mimetype, then files with no known extensions,
   then files with the wrong extension
+- Fixed some bad formatting in PowerShell output
 
 ### v0.2.12 (2021-04-14)
 #### Features

src/formats.rs

@@ -226,7 +226,7 @@ impl Format for PowerShell {
 	fn unknown_type<W: Write>(&self, f: &mut W, path: &Path) -> io::Result<()> {
 		smart_write(
 			f,
-			&["<# Failed to detect mime type for ".into(), path.into(), "#>".into()],
+			&["<# Failed to detect mime type for ".into(), path.into(), "#>".into(), Writable::Newline],
 		)
 	}