Updated welcome announcement with Syllabus Affirmation link

welcome_announcement.html

 <p>Hello everyone and welcome to Data Science Journal Club (DSJC)!</p>
-<p>Please take a few minutes to read over the <a title="Syllabus"
-        href="/courses/1601187/assignments/syllabus">syllabus</a> as it is the central repository for information about
-    this course.</p>
+<p>Please take a few minutes to read over the <a title="Syllabus" href="" data-course-type="navigation">syllabus</a> as
+    it is the central repository for information about this course.
+    There is a required, single-question, <a title="Syllabus Affirmation" href="" data-course-type="assignments"
+        data-published="true">Syllabus Affirmation</a> quiz due on Wednesday, August 30,
+    2023.</p>
 <p>If you are new to the course, welcome! We hope you have an enlightening experience. We are happy to answer questions
     and provide guidance, please feel free to reach out with questions, and please read the syllabus for more detailed
     information about expectations.</p>