perf scripts python: Update audit-libs package name for python3

'audit-libs-python' is the package for python2, update it for python3.
On Ubuntu and Fedora, the new package is 'python3-audit'.

Signed-off-by: Wei Li <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Ian Rogers <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Li Bin <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py

···
 except:
 	if not audit_package_warned:
 		audit_package_warned = True
-		print("Install the audit-libs-python package to get syscall names.\n"
-                    "For example:\n  # apt-get install python-audit (Ubuntu)"
-                    "\n  # yum install audit-libs-python (Fedora)"
+		print("Install the python-audit package to get syscall names.\n"
+                    "For example:\n  # apt-get install python3-audit (Ubuntu)"
+                    "\n  # yum install python3-audit (Fedora)"
                     "\n  etc.\n")
 
 def syscall_name(id):