update standard template with instructions

docs/standards/standard.template.md

@@ -32,6 +32,8 @@ Internal links need to follow this format:
 [link text to internal page]({{ '/standards/writing-a-standard/' | url }})
 Note the use of the `url` filter. This ensures the link is appended to the base URL of the webpage correctly.
 
+Anchor tags, such as those used when listing the requirements at the top of the 'Requirements' section, should use HTML URL Encoding. This ensures headers with punctuation will work as expected. You can obtain the HTML URL Encodeded link by running the site locally, inspecting the appropriate <h3> element in the browser's developer tools and copying the value from the 'id' attribute.
+
 External links follow standard markdown formatting:
 [link text to external page](https://example.com)
 -->