fix: Don't add newlines at EOF, it cause visible whitespace for HTML includes (#3989)

.editorconfig

@@ -40,3 +40,10 @@ indent_size = 2
 
 [cypress/**]
 indent_size = 2
+
+# Settings for HTML templates
+# ---------------------------------------------------------
+# HTML should not have final newlines, because that causes visible whitespace when includes are rendered
+
+[ietf/**.html]
+insert_final_newline = false

ietf/templates/person/person_link.html

@@ -8,5 +8,4 @@
                href="mailto:{{ email|urlencode }}"
                aria-label="Compose email to {{ email }}."
                title="Compose email to {{ email }}.">
-                <i class="bi bi-envelope"></i></a>{% endif %}{% else %}<span class="text-muted">(None)</span>{% endif %}</span>
-{% endif %}
+                <i class="bi bi-envelope"></i></a>{% endif %}{% else %}<span class="text-muted">(None)</span>{% endif %}</span>{% endif %}