fix(version_detail): Fix duplicate message and clarify wording

Author: florentfougeres

qgis-app/plugins/templates/plugins/version_detail.html

@@ -435,7 +435,7 @@ <h5 class="title is-6 mb-3">{% trans "Issues found" %}: {{ qt6_issues|length }}<
                 </div>
                 {% else %}
                     <div class="notification is-success is-light">
-                        {% trans "No issues found, this plugin is fully Qt6 compatible!" %}
+                        {% trans "No issues found." %}
                     </div>
                 {% endif %}
             {% endif %}