only in patch2:
unchanged:
--- a/core/themes/bartik/templates/field--taxonomy-term-reference.html.twig
+++ b/core/themes/bartik/templates/field--taxonomy-term-reference.html.twig
@@ -17,7 +17,7 @@
  */
 #}
 <div class="{{ attributes.class }} clearfix"{{ attributes|without('class') }}>
-  <h3{{ label_attributes }}>{{ label }}: </h3>
+  <h3{{ label_attributes }}>{{ label }}</h3>
   <ul class="links">
     {% for delta, item in items %}
       <li class="taxonomy-term-reference-{{ delta }}"{{ item_attributes[delta] }}>{{ item }}</li>