Update office hours information

src/pages/support/virtual-meetings.mdx

@@ -7,8 +7,9 @@ export const meta = {
 ## Office Hours
 
 The PrairieLearn team holds weekly office hours via Zoom meetings that are open to anyone using PrairieLearn.
-This (August - December 2023) term we are meeting on Thursdays 3pm-4pm Central Time.
-Email [email protected] if you need an invite.
+Office hours run weekly on Thursdays 3pm-4pm Central Time.
+You can find the Zoom link in the topic of the `#pl-help` channel of the PrairieLearn Slack workspace.
+If you're not on Slack, email [email protected] for an invite.
 
 ## Workshops