updated select-bindings text.md (#6333)

Referenced line is now 20 instead of 24

site/content/tutorial/06-bindings/06-select-bindings/text.md

@@ -2,12 +2,12 @@
 title: Select bindings
 ---
 
-We can also use `bind:value` with `<select>` elements. Update line 24:
+We can also use `bind:value` with `<select>` elements. Update line 20:
 
 ```html
 <select bind:value={selected} on:change="{() => answer = ''}">
 ```
 
 Note that the `<option>` values are objects rather than strings. Svelte doesn't mind.
 
-> Because we haven't set an initial value of `selected`, the binding will set it to the default value (the first in the list) automatically. Be careful though — until the binding is initialised, `selected` remains undefined, so we can't blindly reference e.g. `selected.id` in the template.
+> Because we haven't set an initial value of `selected`, the binding will set it to the default value (the first in the list) automatically. Be careful though — until the binding is initialised, `selected` remains undefined, so we can't blindly reference e.g. `selected.id` in the template.