Improve client lib and exposition format wording.

content/docs/instrumenting/clientlibs.md

@@ -5,13 +5,9 @@ sort_rank: 1
 
 # Client libraries
 
-If you want to monitor services which do not have existing Prometheus
-instrumentation, you will need to instrument your application's code via one of
-the Prometheus client libraries.
-
-First, familiarize yourself with the Prometheus-supported
-[metric types](/docs/concepts/metric_types/). To use these types programmatically, see
-your specific client library's documentation.
+Before you can monitor your services, you need to add instrumentation to their
+code via one of the Prometheus client libraries. These implement the Prometheus
+[metric types](/docs/concepts/metric_types/).
 
 Choose a Prometheus client library that matches the language in which your
 application is written. This lets you define and expose internal metrics via an
@@ -25,6 +21,5 @@ When Prometheus scrapes your instance's HTTP endpoint, the client library
 sends the current state of all tracked metrics to the server.
 
 If no client library is available for your language, or you want to avoid
-dependencies on a client library, you may also implement one of the supported
-[exposition formats](/docs/instrumenting/exposition_formats) yourself to
-expose metrics.
+dependencies, you may also implement one of the supported [exposition
+formats](/docs/instrumenting/exposition_formats) yourself to expose metrics.

content/docs/instrumenting/exposition_formats.md

@@ -5,12 +5,14 @@ sort_rank: 2
 
 # Exposition formats
 
-Prometheus implements two different transfer formats which clients may use to
+Prometheus implements two different wire formats which clients may use to
 expose metrics to a Prometheus server: a simple text-based format and a more
-efficient and robust protocol-buffer format. Prometheus servers and clients
-use [content negotation](http://en.wikipedia.org/wiki/Content_negotiation)
-to establish the actual format to use. A server will prefer receiving the
+efficient and robust protocol-buffer format. Prometheus servers and clients use
+[content negotation](http://en.wikipedia.org/wiki/Content_negotiation) to
+establish the actual format to use. A server will prefer receiving the
 protocol-buffer format, and will fall back to the text-based format if the
 client does not support the former.
 
-For details on each format, see the [Client Data Exposition Format](https://docs.google.com/document/d/1ZjyKiKxZV83VI9ZKAXRGKaUKK2BIWCT7oiGBKDBpjEY/edit?usp=sharing) document.
+For details on each format and the content negotiation options, see the
+[Client Data Exposition Format](https://docs.google.com/document/d/1ZjyKiKxZV83VI9ZKAXRGKaUKK2BIWCT7oiGBKDBpjEY/edit?usp=sharing)
+document.