unbound: fix whitespace

* Fix upstream whitespace change in the patch.
* Minor cleanup to the header.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

net/unbound/patches/001-conf.patch

@@ -1,5 +1,3 @@
-diff --git a/doc/example.conf.in b/doc/example.conf.in
-index ff90e3b..5c20fdf 100644
 --- a/doc/example.conf.in
 +++ b/doc/example.conf.in
 @@ -38,6 +38,8 @@ server:
@@ -77,7 +75,7 @@ index ff90e3b..5c20fdf 100644
  	# the maximum number of hosts that are cached (roundtrip, EDNS, lame).
  	# infra-cache-numhosts: 10000
 +	infra-cache-numhosts: 200
- 
+ 	
  	# define a number of tags here, use with local-zone, access-control.
  	# repeat the define-tag statement to add additional tags.
 @@ -215,6 +228,8 @@ server: