From a Browser:
Create a community forum and then create a topic and add a tag to the topic.
Create a second topic and add a tag.
Go to the community overview page and in the Tag widget, click on the tag of one of the topics. You'll find that it takes you to the specific topic.
Copy the URL from the address bar.
Create a wiki page and paste the URL.
Save the page and click on the URL. You'll find that it takes you to the specific topic.
From the Connections Mobile App:
Login to the Mobile application and go to the wiki page that was created above.
Click on the forum topic URL. It doesn't take you to the specific URL. Instead, it takes you to the forum's list of topics.