Fix path of upstream ngircd.conf. Closes: #693169

debian/ngircd.conf

@@ -16,7 +16,7 @@
 # and their descriptions.
 #
 # The original can be found at:
-# /usr/share/doc/ngircd/examples/sample-ngircd.conf.gz
+# /usr/share/doc/ngircd/sample-ngircd.conf.gz
 
 [Global]
 	# The [Global] section of this file is used to define the main