warning: empty lines after doc comment
  --> src/cmds/completions.rs:12:1
   |
12 | / /// Generate shell Completions
13 | |
14 | | /// USAGE:
15 | | ///     leetcode completions <shell>
16 | |
   | |_^
...
20 |   pub struct CompletionCommand;
   |   ---------------------------- the comment documents this struct
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
   = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default
   = help: if the empty lines are unintentional remove them
help: if the documentation should include the empty lines include them in the comment
   |
13 + ///
14 | /// USAGE:
15 | ///     leetcode completions <shell>
16 + ///
   |