Finalize release notes for 5.0.0-RC3

Author: marcphilipp

documentation/src/docs/asciidoc/release-notes-5.0.0-RC3.adoc

@@ -1,13 +1,13 @@
 [[release-notes-5.0.0-rc3]]
 === 5.0.0-RC3
 
-*Date of Release:* August 24, 2017
+*Date of Release:* August 23, 2017
 
-*Scope:* Last release candidate before the 5.0 GA release.
+*Scope:* Configuration parameters and bug fixes.
 
 WARNING: This is a pre-release and contains a few breaking changes. Please refer to the
 <<running-tests-ide-intellij-idea,instructions>> above to use this version in a version of
-IntelliJ IDEA that bundles an older milestone release.
+IntelliJ IDEA that bundles an older milestone or release candidate.
 
 For a complete list of all _closed_ issues and pull requests for this release, consult the
 link:{junit5-repo}+/milestone/13?closed=1+[5.0 RC3] milestone page in the JUnit repository