Remove a double "the"

Author: couet

doc/commands.doc

@@ -2568,7 +2568,7 @@ Commands for displaying examples
 \section cmdxmlinclude \\xmlinclude <file-name>
 
   \addindex \\xmlinclude
-  This command includes contents of the the file \<file-name\> as is in the XML documentation.
+  This command includes contents of the file \<file-name\> as is in the XML documentation.
   The command is equivalent to pasting the contents of the file in the documentation and
   placing \ref cmdxmlonly "\\xmlonly" and \ref cmdendxmlonly "\\endxmlonly"
   commands around it.