Update README.md

Co-authored-by: Bryce Eadie <[email protected]>

README.md

@@ -254,7 +254,7 @@ To uninstall the Agent, remove the `dd-agent` recipe and add the `remove-dd-agen
 
 To use an Agent from a custom repository, you can set the `aptrepo` option. 
 
-By default this option is equal to `[signed-by=/usr/share/keyrings/datadog-archive-keyring.gpg] apt.datadoghq.com`, if a custom value is set, another `signed-by` keyring can be set `[signed-by=custom-repo-keyring-path] custom-repo`.
+By default, this option is equal to `[signed-by=/usr/share/keyrings/datadog-archive-keyring.gpg] apt.datadoghq.com`. If a custom value is set, another `signed-by` keyring can also be set `[signed-by=custom-repo-keyring-path] custom-repo`.
 
 Using staging repository
 ```ruby