chore: ♻️ Fix typos

machine/src/devices/console.rs

@@ -98,7 +98,7 @@ impl Console {
     }
 
     /// Overwrite the current output. The old output will go out of scope and
-    /// it's Drop function will be called.
+    /// its Drop function will be called.
     pub fn replace_with(&mut self, x: Output) {
         self.current_ptr().flush();
 

machine/src/lib.rs

@@ -59,7 +59,7 @@ static DMA_ALLOCATOR: sync::NullLock<Lazy<BuddyAlloc>> =
         ))
     }));
 // Try the following arguments instead to see all mailbox operations
-// fail. It will cause the allocator to use memory that are marked
+// fail. It will cause the allocator to use memory that is marked
 // cacheable and therefore not DMA-safe. The answer from the VideoCore
 // won't be received by the CPU because it reads an old cached value
 // that resembles an error case instead.