Update getting_started.md (docker#3339)

notary/getting_started.md

@@ -19,7 +19,7 @@ and signing interface to create signed collections and configure trusted publish
 With Notary anyone can provide trust over arbitrary collections of data. Using
 <a href="https://www.theupdateframework.com/" target="_blank">The Update Framework (TUF)</a>
 as the underlying security framework, Notary takes care of the operations necessary
-to create, manage and distribute the metadata necessary to ensure the integrity and
+to create, manage, and distribute the metadata necessary to ensure the integrity and
 freshness of your content.
 
 ## Install Notary
@@ -145,4 +145,4 @@ alias dockernotary="notary -s https://notary.docker.io -d ~/.docker/trust"
 ```
 
 More advanced methods of configuration, and additional options, can be found in
-the [configuration doc](reference/index.md) and by running `notary --help`.
+the [configuration doc](reference/index.md) and by running `notary --help`.