Update docs/content/1.getting-started/2.usage.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: rijkvanzanten

docs/content/1.getting-started/2.usage.md

@@ -98,7 +98,7 @@ import { SplitPanel } from '@directus/vue-split-panel';
   ::
 
   ::field{name="collapsedSize" type="number"}
-    How much fo the collapsed panel is visible in its collapsed state.  
+    How much of the collapsed panel is visible in its collapsed state.  
   ::
 
   ::field{name="transitionDuration" type="number"}