ndb(8): formatting fixes
 [rsc] --rw-rw-r-- M 128579 glenda sys 10087 Mar 31 09:12 sys/man/8/ndb
	/n/sourcesdump/2006/0331/plan9/sys/man/8/ndb:227,232 - 
	/n/sourcesdump/2006/0401/plan9/sys/man/8/ndb:227,233
	  	dns=ns2.cs.bell-labs.com
	  dom=ns1.cs.bell-labs.com ip=135.104.1.11
	  dom=ns2.cs.bell-labs.com ip=135.104.1.12
	+ .EE
	  .PP
	  The server for a domain is indicated by a database entry containing
	  both a
	/n/sourcesdump/2006/0331/plan9/sys/man/8/ndb:244,250 - 
	/n/sourcesdump/2006/0401/plan9/sys/man/8/ndb:245,250
	  dom=A.ROOT-SERVERS.NET ip=198.41.0.4
	  dom=B.ROOT-SERVERS.NET ip=128.9.0.107
	  dom=C.ROOT-SERVERS.NET ip=192.33.4.12
	- 
	  .EE
	  The last three lines provide a mapping for the
	  server names to their ip addresses.  This is only