Document MethodFilter cli options and add an example

Issue: junit-team#3107

documentation/src/docs/asciidoc/release-notes/release-notes-5.10.0-M1.adoc

@@ -40,8 +40,11 @@ repository on GitHub.
   details.
 * The new `testfeed` details mode for `ConsoleLauncher` prints test execution events as
   they occur in a concise format.
-
 * Introduce `MethodFilter` to include or exclude methods based on fully qualified method names without parameters.
+* New `--exclude-methodname` and `--include-methodname` options added to the
+`ConsoleLauncher` to include or exclude methods based on fully qualified method names
+without parameters. For example, `--exclude-methodname=^org\.example\..+#methodname`
+will exclude all methods called `methodName` under package `org.example`.
 
 [[release-notes-5.10.0-M1-junit-jupiter]]
 === JUnit Jupiter