docs: less CoreDNS in docs (#1154)

Various other changes.

plugin/autopath/README.md

 # autopath
 
-*autopath* allows CoreDNS to perform server side search path completion.
+*autopath* allows for server side search path completion.
 
 If it sees a query that matches the first element of the configured search path, *autopath* will
 follow the chain of search path elements and returns the first reply that is not NXDOMAIN. On any
@@ -44,8 +44,3 @@ autopath @kubernetes
 ~~~
 
 Use the search path dynamically retrieved from the kubernetes plugin.
-
-## Bugs
-
-Replies from this plugin are not cached, as the *cache* plugin is configured after this one (see
-plugin.cfg).

plugin/chaos/README.md

 # chaos
 
-*chaos* allows CoreDNS to respond to TXT queries in the CH class.
+*chaos* allows for responding to TXT queries in the CH class.
 
 This is useful for retrieving version or author information from the server.
 

plugin/debug/README.md

 # debug
 
-*debug* disables the automatic recovery upon a CoreDNS crash so that you'll get a nice stack trace.
+*debug* disables the automatic recovery upon a crash so that you'll get a nice stack trace.
 
 Note that the *errors* plugin (if loaded) will also set a `recover` negating this setting. The main
 use of *debug* is to help testing.
@@ -13,7 +13,7 @@ debug
 
 ## Examples
 
-Disable CoreDNS' ability to recover from crashes:
+Disable the ability to recover from crashes:
 
 ~~~ corefile
 . {

plugin/health/README.md

 # health
 
-*health* enables a simple health check endpoint. By default, it listens on port 8080.
+*health* enables a simple health check endpoint.
+
+By default, it listens on port 8080.
 
 ## Syntax
 

plugin/metrics/README.md

 # prometheus
 
-*prometheus* enables [Prometheus](https://prometheus.io/) metrics for CoreDNS.
+*prometheus* enables [Prometheus](https://prometheus.io/) metrics.
 
 The default location for the metrics is `localhost:9153`. The metrics path is fixed to `/metrics`.
 The following metrics are exported:

plugin/reverse/README.md

 # reverse
 
-*reverse* allows CoreDNS to respond dynamically to a PTR request and the related A/AAAA request.
+*reverse* allows for dynamic responses to PTR and the related A/AAAA requests.
 
 ## Syntax
 

plugin/root/README.md

 # root
 
-*root* simply specifies the root of where CoreDNS finds (e.g.) zone files.
+*root* simply specifies the root of where to find (zone) files.
 
 The default root is the current working directory of CoreDNS. A relative root path is relative to
 the current working directory.

plugin/whoami/README.md

@@ -3,7 +3,7 @@
 *whoami* returns your resolver's local IP address, port and transport. Your IP address is returned
  in the additional section as either an A or AAAA record.
 
-When CoreDNS can find a Corefile to load, this is the default plugin it loads.
+When CoreDNS can not find a Corefile to load, this is the default plugin it loads.
 
 The reply always has an empty answer section. The port and transport are included in the additional
 section as a SRV record, transport can be "tcp" or "udp".