Utils: Rename QtcProcess::Result::Finished to FinishedWithSuccess

To make clear that this is not just any finish.

Also change FinishedError to FinishedWithError, to create
symmetry.

Also adapt enum member description to reality.

Change-Id: I13e05391eb86fdb24e2ae660f14dfddb282e1104
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/texteditor/formattexteditor.cpp

@@ -92,7 +92,7 @@ static FormatTask format(FormatTask task)
         process.setTimeoutS(5);
         process.setCommand({executable, options});
         process.runBlocking();
-        if (process.result() != QtcProcess::Finished) {
+        if (process.result() != QtcProcess::FinishedWithSuccess) {
             task.error = QString(QT_TRANSLATE_NOOP("TextEditor", "Failed to format: %1."))
                              .arg(process.exitMessage());
             return task;