Change wiki site from miraheze to openfront.wiki (#2483)

Change the wiki site from the inactive openfront.miraheze.org to the new
openfront.wiki link.
Ideally for v27?

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

regression is found:

Lavodan

index.html

@@ -382,6 +382,14 @@
         <div
           class="flex flex-col sm:flex-row gap-4 sm:gap-5 text-white/70 justify-center md:justify-start flex-shrink-0"
         >
+          <a
+            href="https://youtu.be/jvHEvbko3uw?si=znspkP84P76B1w5I"
+            data-i18n="main.how_to_play"
+            class="t-link"
+            target="_blank"
+          >
+            How to Play
+          </a>
           <a
             href="https://openfront.wiki/Main_Page"
             data-i18n="main.wiki"