Update non_null.rs

Author: Dhvani-Kapadia

library/core/src/ptr/non_null.rs

@@ -1774,9 +1774,9 @@ impl<T: ?Sized> From<&mut T> for NonNull<T> {
     #[inline]
     fn from(reference: &mut T) -> Self {
         // SAFETY: A mutable reference cannot be null.
-       unsafe { NonNull { pointer: reference as *mut T } }
+        unsafe { NonNull { pointer: reference as *mut T } }
     }
-}    
+}  
 
 #[stable(feature = "nonnull", since = "1.25.0")]
 impl<T: ?Sized> From<&T> for NonNull<T> {
@@ -1786,7 +1786,7 @@ impl<T: ?Sized> From<&T> for NonNull<T> {
     #[inline]
     fn from(reference: &T) -> Self {
         // SAFETY: A reference cannot be null.
-       unsafe { NonNull { pointer: reference as *const T } }
+        unsafe { NonNull { pointer: reference as *const T } }
     }
 }