chore: remove duplicate "the" in ciphers.rs comment (#7254)

`src/api/core/ciphers.rs:170` comment said "similar to the the
userDecryptionOptions" -> "similar to the userDecryptionOptions".

Comment-only.

Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>

src/api/core/ciphers.rs

@@ -167,7 +167,7 @@ async fn sync(data: SyncData, headers: Headers, client_version: Option<ClientVer
         api::core::get_eq_domains(&headers, true).into_inner()
     };
 
-    // This is very similar to the the userDecryptionOptions sent in connect/token,
+    // This is very similar to the userDecryptionOptions sent in connect/token,
     // but as of 2025-12-19 they're both using different casing conventions.
     let has_master_password = !headers.user.password_hash.is_empty();
     let master_password_unlock = if has_master_password {