chore: fix some clippy warns

README.md

@@ -48,7 +48,6 @@ Elements items come from  [main changes](/NewRelic/be-technical-interview-rust/s
 - Benchmarking for optimization
 - More **tests**
 - Run as **API mode** not only as batch processing
-<br>
 
 > [!NOTE]
 > Code is in a private repository with several other branches.<br>

src/main.rs

@@ -135,7 +135,7 @@ fn generate_metrics(targets_list: Vec<MetricsConsumerTarget>, be_quiet: bool) {
 /// - Create **targets list** as [`MetricsConsumerTarget`] vector
 /// - Call to [`generate_metrics`] to do the job
 /// - If not **be_quiet** mode print elapsed time in milliseconds
-/// <br>
+/// 
 /// > This is not running async and not expect any **Result**.
 fn main() {
     let main_start = Instant::now();