Fix typos

src/set.rs

@@ -181,7 +181,7 @@ impl<F: Copy, P, B: MappingBackend<F, P>> MemorySet<F, P, B> {
     ///
     /// `update_flags` is a function that receives old flags and processes
     /// new flags (e.g., some flags can not be changed through this interface).
-    /// It returns [None] if there is no bit to change.
+    /// It returns [`None`] if there is no bit to change.
     ///
     /// Memory areas will be skipped according to `update_flags`. Memory areas
     /// that are fully contained in the range or contains the range or intersects

src/tests.rs

@@ -309,11 +309,10 @@ fn test_protect() {
         }
     }
 
-    // Test skip [0x850, 0x900), [0x2850, 0x2900), [0x4850, 0x4900), ...
+    // Test skip [0x880, 0x900), [0x2880, 0x2900), [0x4880, 0x4900), ...
     for start in (0..MAX_ADDR).step_by(0x2000) {
         assert_ok!(set.protect((start + 0x880).into(), 0x80, update_flags(0x3), &mut pt));
     }
-    dump_memory_set(&set);
     assert_eq!(set.len(), 39);
 
     // Unmap all areas.