fix include path in doc/sample page
fix include path in doc/sample page

pohly/cloudeebus,modulexcite/cloudeebus,modulexcite/cloudeebus,lizardo/cloudeebus-devel,01org/cloudeebus,01org/cloudeebus,modulexcite/cloudeebus,fpaut/cloudeebus,fpaut/cloudeebus,monsieurmona/cloudeebus,lizardo/cloudeebus-devel,pohly/cloudeebus,monsieurmona/cloudeebus,monsieurmona/cloudeebus,01org/cloudeebus,enzuguri/cloudeebus,enzuguri/cloudeebus,fpaut/cloudeebus,lizardo/cloudeebus-devel,enzuguri/cloudeebus,pohly/cloudeebus