update doc to not use the root zone for everything (#3288)

Update all documentation in the tree to use example.org as an example
configuration (in so far possible). As to get out of the just use "."
and fallthrough and things would be fine.

Signed-off-by: Miek Gieben <miek@miek.nl>

plugin/erratic/README.md

@@ -40,7 +40,7 @@ This plugin reports readiness to the ready plugin.
 ## Examples
 
 ~~~ corefile
-. {
+example.org {
     erratic {
         drop 3
     }
@@ -50,7 +50,7 @@ This plugin reports readiness to the ready plugin.
 Or even shorter if the defaults suits you. Note this only drops queries, it does not delay them.
 
 ~~~ corefile
-. {
+example.org {
     erratic
 }
 ~~~
@@ -58,7 +58,7 @@ Or even shorter if the defaults suits you. Note this only drops queries, it does
 Delay 1 in 3 queries for 50ms
 
 ~~~ corefile
-. {
+example.org {
     erratic {
         delay 3 50ms
     }
@@ -68,7 +68,7 @@ Delay 1 in 3 queries for 50ms
 Delay 1 in 3 and truncate 1 in 5.
 
 ~~~ corefile
-. {
+example.org {
     erratic {
         delay 3 5ms
         truncate 5
@@ -79,7 +79,7 @@ Delay 1 in 3 and truncate 1 in 5.
 Drop every second query.
 
 ~~~ corefile
-. {
+example.org {
     erratic {
         drop 2
         truncate 2
@@ -89,5 +89,4 @@ Drop every second query.
 
 ## Also See
 
-[RFC 3849](https://tools.ietf.org/html/rfc3849) and
-[RFC 5737](https://tools.ietf.org/html/rfc5737).
+[RFC 3849](https://tools.ietf.org/html/rfc3849) and [RFC 5737](https://tools.ietf.org/html/rfc5737).