add an opening sentence

Author: mw-hrastega

CONFIGDOC.md

@@ -1,3 +1,5 @@
+This guide shows you examples of how to configure the Jenkins™ plugin for MATLAB®, considering a Microsoft® Windows® platform.
+
 ## Contents
 
 -  [Configure Plugin for Freestyle Project](#configure-plugin-for-freestyle-project)
@@ -104,4 +106,4 @@ To configure the matrix build where you can customize the MATLAB test execution,
 **Notes:**
 1) For a user-defined axis named **VAR**,  **$VAR** and **${VAR}** are both valid formats for accessing the values.
 
-2) A multi-configuration project creates a separate workspace for each user-defined axis value. If you specify the full paths to where MATLAB is installed as axis values, Jenkins fails to create separate workspaces and fails the build.	
+2) A multi-configuration project creates a separate workspace for each user-defined axis value. If you specify the full paths to where MATLAB is installed as axis values, Jenkins fails to create separate workspaces and fails the build.