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/query.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/query.rs b/src/query.rs
index 7fe3e22..2aa6fa3 100644
--- a/src/query.rs
+++ b/src/query.rs
@@ -74,9 +74,9 @@ mod tests {
     #[test]
     fn exact_beats_substring_and_first_best_wins() {
         let c = [
-            cand(1, Some("cce-email-helper")),
-            cand(2, Some("cce-email")),
-            cand(3, Some("cce-email")),
+            cand(1, Some("cce-mail-helper")),
+            cand(2, Some("cce-mail")),
+            cand(3, Some("cce-mail")),
         ];
         // Exact match at position 1 outranks the earlier substring match;
         // the later equal-score exact match doesn't displace it.