Fix log output for channel

[michaelortmann]

Found by: jackal
Patch by: jackal and michaelortmann
Fixes:

One-line summary:
Fix log output for channel (1 channels -> 1 channel)

Additional description (if needed):
And reduce amount of printf() to 1 for multiple line output when -nt command line args

Test cases demonstrating functionality (if applicable):
$ ./eggdrop -nt BotA.conf
Before:

=== BotA: 1 channels, 23 users.

NOTE: The -n flag is no longer used, it is as effective as Han
      without Chewie

After:

=== BotA: 1 channel, 23 users.

NOTE: The -n flag is no longer used, it is as effective as Han
      without Chewie