Making README consistent, fixing "meta data"
## Name
-*metadata* - enable a meta data collector.
+*metadata* - enables a metadata collector.
## Description
By enabling *metadata* any plugin that implements [metadata.Provider
interface](https://godoc.org/github.com/coredns/coredns/plugin/metadata#Provider) will be called for
-each DNS query, at beginning of the process for that query, in order to add its own meta data to
+each DNS query, at the beginning of the process for that query, in order to add its own metadata to
context.
The metadata collected will be available for all plugins, via the Context parameter provided in the
@@ -17,7 +17,7 @@ metadata a plugin might be interested in.
The metadata is added by setting a label with a value in the context. These labels should be named
`plugin/NAME`, where **NAME** is something descriptive. The only hard requirement the *metadata*
-plugin enforces is that the labels contains a slash. See the documentation for
+plugin enforces is that the labels contain a slash. See the documentation for
`metadata.SetValueFunc`.
The value stored is a string. The empty string signals "no metadata". See the documentation for
