s/derefernce/dereference

Co-Authored-By: Aaron1011 <aa1ronham@gmail.com>

Author: oli-obk

src/fn_call.rs

@@ -236,7 +236,7 @@ pub trait EvalContextExt<'a, 'mir, 'tcx: 'a + 'mir>: crate::MiriEvalContextExt<'
                 let data_ptr = payload_dyn.to_scalar_ptr()?;
                 this.memory().check_align(vtable_ptr.into(), this.tcx.data_layout.pointer_align.abi)?;
 
-                // Now, we derefernce the vtable pointer.
+                // Now, we dereference the vtable pointer.
                 let alloc = this.memory().get(vtable_ptr.alloc_id)?;
 
                 // Finally, we extract the pointer to 'box_me_up'.