Document typo fix in network layer section (#3804)

* Fix typo.
* Another typo fix.
* Changelog update

CHANGELOG.md

@@ -8,6 +8,8 @@
   `ApolloClient.readFragment`, that when set to `true`, will allow
   optimistic results to be returned. Is `false` by default.  <br/>
   [@jay1337](https://github.com/jay1337) in [#2429](https://github.com/apollographql/apollo-client/pull/2429)
+- Documentation updates.  <br/>
+  [@toolness](https://github.com/toolness) in [#3804](https://github.com/apollographql/apollo-client/pull/3804)
 
 ### Apollo Cache In-Memory (vNext)
 

docs/source/advanced/network-layer.md

@@ -3,15 +3,15 @@ title: Network layer (Apollo Link)
 order: 110
 description: How to configure Apollo Client's network layer.
 ---
-Now that you have learned how to read and update your data, its helpful to know how to direct where your data comes from and where it goes! Apollo has a powerful way to manage your network layer using a library called [Apollo Link](/docs/link);
+Now that you have learned how to read and update your data, its helpful to know how to direct where your data comes from and where it goes! Apollo has a powerful way to manage your network layer using a library called [Apollo Link](/docs/link).
 
 <h2 id="network-interfaces">Apollo Link</h2>
 
 Apollo Client has a pluggable network interface layer, which can let you configure how queries are sent over HTTP, or replace the whole network part with something completely custom, like a websocket transport, mocked server data, or anything else you can imagine.
 
 <h3 title="Using a link">Using a link</h3>
 
-To create a link to use with Apollo Client, you can install and import one from npm or create your own. We recommend using `apollo-link-http` for most setups!.
+To create a link to use with Apollo Client, you can install and import one from npm or create your own. We recommend using `apollo-link-http` for most setups.
 
 Here's how you would instantiate a new client with a custom endpoint URL using the HttpLink: