Update crates/jstz_engine/src/gc/ptr.rs

Co-authored-by: zcabter <[email protected]>

crates/jstz_engine/src/gc/ptr.rs

@@ -96,7 +96,7 @@ impl<T: WriteBarrieredPtr> GcPtr<T> {
     /// points to a valid `js::gc::Cell`.
     pub unsafe fn get(&self) -> T {
         // Note: read_unaligned is used since SpiderMonkey doesn't
-        // guarantee the expected align of Rust pointers.
+        // guarantee the expected alignment of Rust pointers.
         self.inner_ptr.get().read_unaligned()
     }