Remove space

src/hyperfine/app.rs

@@ -81,7 +81,7 @@ fn build_app() -> App<'static, 'static> {
                 .value_name("CMD")
                 .help(
                     "Execute CMD before each timing run. This is useful for \
-                     clearing disk caches, for example. \nThe --prepare option can \
+                     clearing disk caches, for example.\nThe --prepare option can \
                      be specified once for all commands or multiple times, once for \
                      each command. In the latter case, each preparation command will \
                      be run prior to the corresponding benchmark command.",