Update 02-component-format.md

Fix the typo "bellow" to "below"

site/content/docs/02-component-format.md

@@ -209,7 +209,7 @@ It is important to note that the reactive blocks are ordered via simple static a
 </script>
 ```
 
-Moving the line `$: yDependent = y` bellow `$: setY(x)` will cause `yDependent` to be updated when `x` is updated.
+Moving the line `$: yDependent = y` below `$: setY(x)` will cause `yDependent` to be updated when `x` is updated.
 
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