Fix 'next' footer link in getting_started to point to WatchingWidgets

Added VitePress frontmatter to override default next link.
Now correctly navigates to WatchingWidgets instead of command_it.

Author: escamoteur

docs/documentation/watch_it/getting_started.md

@@ -1,3 +1,9 @@
+---
+next:
+  text: 'WatchingWidgets'
+  link: '/documentation/watch_it/watching_widgets'
+---
+
 <div class="header-with-logo">
   <div class="header-content">