df: add spell-checker ignore for binfmt

Author: van-sprundel

src/uucore/src/lib/features/fsext.rs

@@ -1225,6 +1225,7 @@ mod tests {
 
     #[test]
     #[cfg(all(unix, not(any(target_os = "aix", target_os = "redox"))))]
+    // spell-checker:ignore (word) binfmt
     fn test_binfmt_misc_is_dummy() {
         use super::is_dummy_filesystem;
         assert!(is_dummy_filesystem("binfmt_misc", ""));

tests/by-util/test_df.rs

@@ -2,7 +2,7 @@
 //
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
-// spell-checker:ignore udev pcent iuse itotal iused ipcent
+// spell-checker:ignore udev pcent iuse itotal iused ipcent binfmt
 #![allow(
     clippy::similar_names,
     clippy::cast_possible_truncation,