Fix typo and update launch date in Jiki waiting list section (#8845)

The previous commit updated the FAQ but missed the waiting list
section. Fixes "We're be" typo to "We'll be" and updates
February to March 2026.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: iHiD

app/views/jiki/index.html.haml

@@ -439,7 +439,7 @@
       Join the
       %strong.font-semibold Waiting List
     %p.intro.text-balance
-      We're be opening up the course starting in February 2026.
+      We'll be opening up the course starting in March 2026.
       The first 1,000 signups get
       %strong.font-semibold free Premium access
       for the year!