Fix formatting in error response HTML

src/http/response/ErrorResponseFactory.ts

@@ -76,7 +76,7 @@ Stack trace:
             str += `
                 <pre><code>
 Context:
-${Object.keys(context).map(key => `    - ${key} : ${context[key]}`)}
+${Object.keys(context).map(key => `    - ${key} : ${context[key]}\n`)}
                 </code></pre>
                 `
         }