Add v2.19.1 docs. (#1048)

Author: DmitryLukyanov

2.19/apidocs/CSharpDriverDocs.chm

@@ -7,13 +7,12 @@
 // Author  : Eric Woodruff  (Eric@EWoodruff.us)
 // Updated : 05/15/2014
 // Note    : Copyright 2007-2015, Eric Woodruff, All rights reserved
-// Compiler: Microsoft C#
 //
 // This file contains the code used to search for keywords within the help topics using the full-text index
 // files created by the help file builder.
 //
 // This code is published under the Microsoft Public License (Ms-PL).  A copy of the license should be
-// distributed with the code.  It can also be found at the project website: https://GitHub.com/EWSoftware/SHFB.  This
+// distributed with the code and can be found at the project website: https://GitHub.com/EWSoftware/SHFB.  This
 // notice, the author's name, and all copyright notices must remain intact in all applications, documentation,
 // and source files.
 //