update comment

Author: SethTisue

proj/scala-java-time.conf

@@ -9,8 +9,10 @@ vars.proj.scala-java-time: ${vars.base} {
 
   extra.exclude: ["*JS", "docs", "demo"]
   extra.commands: ${vars.default-commands} [
-    // TestDateTimeTextPrinting: started failing recently, I let them know at
+    // TestDateTimeTextPrinting: only works on JDK 13+, as per
     //   https://github.com/cquiroz/scala-java-time/pull/176
+    //   It's not worth marking the entire repo expected-to-fail
+    //   on JDK 8 and 11 IMO, so we just exclude the test.
     // TestSimpleDateTimeTextProvider: always fails on JDK 14
     """set scalajavatimeTests.jvm / Test / unmanagedSources / excludeFilter := HiddenFileFilter || "TestSimpleDateTimeTextProvider.scala" || "TestDateTimeTextPrinting.scala""""
   ]