rename: refer to cce-mail, not cce-email

Comment and test-fixture references only; the crate was renamed.

Co-Authored-By: Claude <[email protected]>

 src/scroll_region.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/scroll_region.rs b/src/scroll_region.rs
index 6b61c04..8e42e25 100644
--- a/src/scroll_region.rs
+++ b/src/scroll_region.rs
@@ -1,5 +1,5 @@
 //! App-owned scroll region replacing the dissolved `ScrollBox` embedded base (the Phase
-//! 6q ScrollRegion, ported via cce-email). The fuzzel list drew its own rows at
+//! 6q ScrollRegion, ported via cce-mail). The fuzzel list drew its own rows at
 //! `get_draw_y` positions; the ScrollBox contributed only the flat background, the
 //! scrollbar, the scroll math, and wheel input — `push_quads` and the ScrollBox-shaped
 //! shims below reproduce those verbatim.