Fix clippy warnings (#1851)

* Fix non-portable doc comments warning

A line starting with > might be interpreted as a block quote.
In regular markdown this could be prevented by escaping the `>`
using a backslash. However, since the doc comments are used by
clap for the long help more or less verbatim, the `\` would be visible
hence the shuffling around of words.

* Use `.contains()`

src/cli.rs

@@ -411,9 +411,9 @@ pub struct Opt {
     /// and line numbers link to the local file using a file URL, whereas commit hashes link to the
     /// commit in GitHub, if the remote repository is hosted by GitHub. See
     /// --hyperlinks-file-link-format for full control over the file URLs emitted. Hyperlinks are
-    /// supported by several common terminal emulators. To make them work, you must use less version
-    /// >= 581 with the -R flag (or use -r with older less versions, but this will break e.g.
-    /// --navigate). If you use tmux, then you will also need a patched fork of tmux (see
+    /// supported by several common terminal emulators. To make them work, you must use less
+    /// version >= 581 with the -R flag (or use -r with older less versions, but this will break
+    /// e.g. --navigate). If you use tmux, then you will also need a patched fork of tmux (see
     /// <https://github.com/dandavison/tmux>).
     pub hyperlinks: bool,
 

src/utils/helpwrap.rs

@@ -103,7 +103,7 @@ pub fn wrap(text: &str, width: usize, indent_with: &str, no_indent: &str, no_wra
     }
 
     #[cfg(test)]
-    if result.find("no-sanity").is_none() {
+    if !result.contains("no-sanity") {
         // sanity check
         let stripped_input = text
             .replace(" ", "")