ESY-6296 Code examples

- handle code examples withour header or json

_includes/code-example.html

@@ -7,12 +7,17 @@
 
 <p class="code-view-header">
     {{ include.title}}
+    {% if include.json %}
     <button aria-describedby="tooltipCopy" class="code-view-copy tooltip" aria-label="Copy json to clipboard" value='{{include.json}}' onclick='javascript:navigator.clipboard.writeText(this.value)'><i class="at-clipboard small" aria-hidden="true"></i><div role="tooltip">Copy json to clipboard</div></button>
+    {% endif %}
 </p>
+{% if include.header %}
 ````http
 {{include.header}}
 ````
-
+{% endif %}
+{% if include.json %}
 ````jsonc
 {{include.json}}
-````
+````
+{% endif %}