Doc: Describe the command to run Cppcheck on selected files

Task-number: QTCREATORBUG-23364
Change-Id: If21f647e5d7bbafae1d14b489aadd57d423cc663
Reviewed-by: Sergey Morozov <dev@gres.biz>
Reviewed-by: hjk <hjk@qt.io>

doc/qtcreator/src/analyze/creator-cppcheck.qdoc

@@ -38,20 +38,29 @@
     The experimental Cppcheck Diagnostics plugin integrates diagnostics
     that are generated by the Cppcheck tool into the C++ editor.
 
-    To enable running Cppcheck automatically on currently open files:
+    Cppcheck is automatically run on open files. To select the files to
+    check in the currently active project, select \uicontrol Analyze >
+    \uicontrol Cppcheck.
+
+    \section1 Enabling the Cppcheck Plugin
+
+    To enable the Cppcheck plugin:
 
     \list 1
         \li Select \uicontrol Help > \uicontrol {About Plugins} >
             \uicontrol {Code Analyzer} > \uicontrol Cppcheck to enable the
             plugin.
         \li Select \uicontrol {Restart Now} to restart \QC and load the plugin.
-        \li Select \uicontrol Tools > \uicontrol Options > \uicontrol Analyzer
-            > \uicontrol Cppcheck to specify settings for running Cppcheck.
-            \image qtcreator-cppcheck-options.png "Cppcheck options"
+    \endlist
+
+    \section1 Running Cppcheck on Selected Files
+
+    \list 1
+        \li Select \uicontrol Analyze > \uicontrol Cppcheck.
+            \image qtcreator-cppcheck-run-configuration.png "Cppcheck run configuration"
         \li In the \uicontrol Binary field, enter the path to the Cppcheck
             executable file.
-        \li In the \uicontrol Checks group, select the checks to perform on
-            currently open files.
+        \li In the \uicontrol Checks group, select the checks to perform.
             \note By default, Cppcheck uses multiple threads to perform checks.
             Selecting the \uicontrol {Unused functions} option disables the
             default behavior.
@@ -78,8 +87,14 @@
             calculate additional arguments based on current project's settings
             (such as the language used and standard version) and pass them to
             Cppcheck.
+        \li Select the files to run Cppcheck on.
+        \li Select \uicontrol Analyze.
     \endlist
 
-    \QC automatically runs Cppcheck on currently opened documents and displays
-    results via text marks or annotations.
+    \QC runs Cppcheck on the selected files and displays results via text
+    marks or annotations.
+
+    To specify the settings above for the automatically run checks,
+    select \uicontrol Tools > \uicontrol Options > \uicontrol Analyzer
+    > \uicontrol Cppcheck.
 */