Operation description change is detected as a change but it is not rendered by HtmlRender #857

When the operation's description changes it is not rendered in the Html

In the following specifications the only difference when compared in text edit are their version and the operation's description

sample-api_3.47.0_ALL.json
sample-api_3.48.0_ALL.json

The operation is detected as changed but renders nothing

testDiff.html

Report was generated by using the example code in home page by specifying rendering all changes i.e.
HtmlRender htmlRender = new HtmlRender("Changelog", "http://deepoove.com/swagger-diff/stylesheets/demo.css", true);