DOC: Add note to array view into_slice methods

Author: bluss

src/impl_views/conversions.rs

@@ -31,6 +31,9 @@ where
 
     /// Return the array’s data as a slice, if it is contiguous and in standard order.
     /// Return `None` otherwise.
+    ///
+    /// Note that while the method is similar to [`ArrayBase::as_slice()`], this method tranfers
+    /// the view's lifetime to the slice, so it is a bit more powerful.
     #[allow(clippy::wrong_self_convention)]
     pub fn into_slice(&self) -> Option<&'a [A]> {
         if self.is_standard_layout() {
@@ -116,6 +119,9 @@ where
 {
     /// Return the array’s data as a slice, if it is contiguous and in standard order.
     /// Return `None` otherwise.
+    ///
+    /// Note that while this is similar to [`ArrayBase::as_slice_mut()`], this method tranfers the
+    /// view's lifetime to the slice.
     pub fn into_slice(self) -> Option<&'a mut [A]> {
         self.into_slice_().ok()
     }