Fix jump table comment grammar
@@ -10,7 +10,7 @@ use core::slice::{Iter, IterMut};
/// Contents of a jump table.
///
-/// All jump tables use 0-based indexing and densely populated.
+/// All jump tables use 0-based indexing and are densely populated.
#[derive(Clone)]
pub struct JumpTableData {
// Table entries.
