[WEBSITE-498] Fix typos and rephrasing

Thanks to @MRamonLeon and @MarkEWaite

Co-Authored-By: alecharp <adrien.lecharpentier@gmail.com>

content/blog/2019/02/2019-02-08-let-s-celebrate-java-11-support.adoc

@@ -23,7 +23,7 @@ We are happy to announce the **full support of Jenkins over Java 11**.
 This means you can now run your instance with a Java 11 JVM.
 
 Since June 2018, many events were organized to improve the code base of Jenkins to support running on Java 11.
-Outside of those events, Core and Plugins maintainers have worked hard to make sure to discover and solve as many potential issues related to Java 11 as possible.
+Outside of those events, Core and Plugins maintainers have worked hard to make sure they discover and solve as many potential issues related to Java 11 as possible.
 
 The effort to support Java 11 led to the creation of the https://github.com/jenkinsci/jep/blob/master/jep/211/README.adoc[JEP-211: Java 10+ support in Jenkins].
 It also formed the https://jenkins.io/sigs/platform[Platform Special Interest Group] to coordinate the Java 11 work and other platform support efforts.
@@ -77,7 +77,7 @@ From there, we will port the support to the link:https://github.com/jenkins-x[Je
 We also have to work on the link:projects/evergreen/[Evergreen] project support for Java 11.
 
 So, even if this is a big deal to us, this is not the end of the story.
-It is more the first step which you, users, developers, members of this community, can really benefit from.
+It a major step that will benefit users, developers, and members of the Jenkins community.
 
 == Reference links