docs: internals/security: minor fixes

website/source/docs/internals/security.html.markdown

@@ -10,8 +10,8 @@ description: |-
 
 Consul relies on both a lightweight gossip mechanism and an RPC system
 to provide various features. Both of the systems have different security
-mechanisms that stem from their designs. However, the goals
-of Consuls security are to provide [confidentiality, integrity and authentication](http://en.wikipedia.org/wiki/Information_security).
+mechanisms that stem from their designs. However, the overall goal
+of Consul's security model is to provide [confidentiality, integrity and authentication](http://en.wikipedia.org/wiki/Information_security).
 
 The [gossip protocol](/docs/internals/gossip.html) is powered by [Serf](http://www.serfdom.io/),
 which uses a symmetric key, or shared secret, cryptosystem. There are more
@@ -19,10 +19,11 @@ details on the security of [Serf here](http://www.serfdom.io/docs/internals/secu
 
 The RPC system supports using end-to-end TLS, with optional client authentication.
 [TLS](http://en.wikipedia.org/wiki/Transport_Layer_Security) is a widely deployed asymmetric
-cryptosystem, and is the foundation of security on the Internet.
+cryptosystem, and is the foundation of security on the Web, as well as
+some other critical parts of the Internet.
 
 This means Consul communication is protected against eavesdropping, tampering,
-or spoofing. This makes it possible to run Consul over untrusted networks such
+and spoofing. This makes it possible to run Consul over untrusted networks such
 as EC2 and other shared hosting providers.
 
 ~> **Advanced Topic!** This page covers the technical details of