Docs: fix manual rollout sentence

doc/ci/environments/incremental_rollouts.md

@@ -43,7 +43,7 @@ number of pods that are defined for the deployment, which are configured when th
 cluster is created.
 
 For example, if your application has 10 pods and a 10% rollout job runs, the new instance of the
-application is deployed to a single pod while the remaining nine are present the previous instance.
+application is deployed to a single pod while the rest of the pods show the previous instance of the application.
 
 First we [define the template as manual](https://gitlab.com/gl-release/incremental-rollout-example/blob/master/.gitlab-ci.yml#L100-103):