Merge pull request OAI#3940 from ralfhandl/build-script-headline-for-…

…abstract

Remove need for separate ReSpec clone for Arazzo

scripts/md2html/md2html.js

@@ -95,7 +95,7 @@ function preface(title,options) {
         preface += fs.readFileSync(path.resolve(__dirname,'gist.css'),'utf8').split('\n').join(' ');
         preface += '</style>';
         preface += `<h1 id="title">${title.split('|')[0]}</h1>`;
-        preface += `<section id="abstract" title="${abstract}">`;
+        preface += `<section id="abstract"><h2>${abstract}</h2>`;
         preface += 'The OpenAPI Specification (OAS) defines a standard, programming language-agnostic interface description for HTTP APIs, which allows both humans and computers to discover and understand the capabilities of a service without requiring access to source code, additional documentation, or inspection of network traffic. When properly defined via OpenAPI, a consumer can understand and interact with the remote service with a minimal amount of implementation logic. Similar to what interface descriptions have done for lower-level programming, the OpenAPI Specification removes guesswork in calling a service.';
         preface += '</section>';
         preface += '<section class="notoc" id="sotd">';