Fix comment typo.

src/bin/home.rs

@@ -22,7 +22,7 @@ fn main() {
 
     let opts = Opt::from_args();
 
-    //Display all the cpu usage for each core
+    // Display all the cpu usage for each core
     for i in 0..num_cpus::get() as u32 {
         bar.push(CpuWidget::new(i));
     }