bpftool: Fix a typo in a comment

This is the wrong library name: libcap, not libpcap.
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220812153727.224500-1-quentin@isovalent.com

tools/bpf/bpftool/feature.c

@@ -1147,7 +1147,7 @@ static int handle_perms(void)
 	return res;
 #else
 	/* Detection assumes user has specific privileges.
-	 * We do not use libpcap so let's approximate, and restrict usage to
+	 * We do not use libcap so let's approximate, and restrict usage to
 	 * root user only.
 	 */
 	if (geteuid()) {