chore: fix nightly lint warning

src/cmd.rs

@@ -23,10 +23,9 @@ use crate::file::display_path;
 use crate::ui::progress_report::SingleReport;
 
 /// Create a command with any number of of positional arguments
-/// may be different types (anything that implements
-/// [`Into<OsString>`](https://doc.rust-lang.org/std/convert/trait.From.html)).
-/// See also the [`cmd`](fn.cmd.html) function, which takes a collection of
-/// arguments.
+///
+/// may be different types (anything that implements [`Into<OsString>`](https://doc.rust-lang.org/std/convert/trait.From.html)).
+/// See also the [`cmd`](fn.cmd.html) function, which takes a collection of arguments.
 ///
 /// # Example
 ///