Doc: Describe "Discard excessive output" option in Compile Output

- Add a description of the option
- Update screenshot
- Fix the capitalization of the checkbox label and the wording of
  the tooltip

Task-number: QTCREATORBUG-31510
Change-Id: I9028f800d640f9f88a51c9275c07b8e327602383
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

doc/qtcreator/src/user-interface/creator-reference-output-views.qdoc

@@ -263,8 +263,10 @@
                     \uicontrol {Compile Output}.
             \endlist
             \image qtcreator-preferences-compile-output.webp {Compile Output tab in Preferences}
-        \li Select the \uicontrol {Open Compile Output when building} check box.
+        \li Select \uicontrol {Open Compile Output when building}.
-        \li In the \uicontrol {Limit output to} field, you can specify the
+        \li Select \uicontrol {Discard excessive output} to discard compile
+            output that continuously comes in faster than it can be handled.
+        \li In \uicontrol {Limit output to}, specify the
             maximum amount of build output lines to display.
     \endlist
 
@@ -278,18 +280,18 @@
     To parse compile output:
 
     \list 1
-        \li Select \uicontrol Tools > \uicontrol {Parse Build Output}.
+        \li Go to \uicontrol Tools > \uicontrol {Parse Build Output}.
             \image qtcreator-parse-build-output.png
-        \li Paste the build output in the \uicontrol {Build Output} field, or
+        \li Paste the build output in \uicontrol {Build Output}, or
             select \uicontrol {Load from File} to load it from a file.
-        \li Deselect the \uicontrol {Output went to stderr} check box if the
+        \li Clear \uicontrol {Output went to stderr} if the parser expects issues
-            parser expects issues on \c stdout.
+            on \c stdout.
-        \li In the \uicontrol {Use parsers from kit} field, select the kit to
+        \li In \uicontrol {Use parsers from kit}, select the kit to
             use for parsing the output. Select \uicontrol Manage to view
             and modify kit settings.
         \li The parser displays the parsed output in \l Issues. By default, the
             view is cleared before adding the new output.
-            Deselect the \uicontrol {Clear existing tasks} check box to append
+            Clear \uicontrol {Clear existing tasks} to append
             the new output to the old output.
         \li Select \uicontrol OK to start parsing.
     \endlist

src/plugins/projectexplorer/compileoutputwindow.cpp

@@ -266,11 +266,11 @@ CompileOutputSettings::CompileOutputSettings()
     popUp.setLabelText(Tr::tr("Open Compile Output when building"));
 
     discardOutput.setSettingsKey("ProjectExplorer/Settings/DiscardCompilerOutput");
-    discardOutput.setLabelText(Tr::tr("Discard Excessive Output"));
+    discardOutput.setLabelText(Tr::tr("Discard excessive output"));
     discardOutput.setToolTip(
         Tr::tr(
-            "If this option is enabled, compile output will be discarded if it continuously comes "
+            "Discards compile output that continuously comes in faster than "
-            "in faster than it can be handled."));
+            "it can be handled."));
 
     maxCharCount.setSettingsKey("ProjectExplorer/Settings/MaxBuildOutputLines");
     maxCharCount.setRange(1, Core::Constants::DEFAULT_MAX_CHAR_COUNT);