doc: fix punctuation in man pages

* man/chmod.x: Add missing punctuation.
* src/expand-common.c: Likewise.
* src/numfmt.c: Likewise.
* src/rm.c: Likewise.

Fixes https://bugs.gnu.org/41962

1 files changed, 1 insertions, 1 deletions

diff --git a/src/rm.c b/src/rm.c
index 370a632f0..5deeac8fb 100644
--- a/src/rm.c
+++ b/src/rm.c
@@ -180,7 +180,7 @@ use one of these commands:\n\
 \n\
 Note that if you use rm to remove a file, it might be possible to recover\n\
 some of its contents, given sufficient expertise and/or time.  For greater\n\
-assurance that the contents are truly unrecoverable, consider using shred.\n\
+assurance that the contents are truly unrecoverable, consider using shred(1).\n\
 "), stdout);
       emit_ancillary_info (PROGRAM_NAME);
     }