chore: move read only note

Author: Timongcraft

src/content/docs/paper/dev/api/pdc.md

@@ -65,8 +65,6 @@ For 1.16.5+, there's the [`ItemStack#editMeta()`](jd:org.bukkit.inventory.ItemSt
 It is considered good practice to reuse `NamespacedKey` objects. They can be constructed with either:
 - A [`Plugin`](jd:paper:org.bukkit.plugin.Plugin) instance and a [`String`](jd:java:java.lang.String) identifier
 - A [`String`](jd:java:java.lang.String) namespace and a [`String`](jd:java:java.lang.String) identifier
-- Certain classes, like `ItemStack` or [`OfflinePlayer`](jd:paper:org.bukkit.OfflinePlayer), provide a read-only view of their PDC.
-In contrast to `ItemStack`, `OfflinePlayer` does <u>not</u> provide any way to modify the underlying container.
 
 The first option is often preferred as it will automatically use the plugin's lowercased name as namespace; however, the second option can be used if you
 want to use a different namespace or access the data from another plugin.
@@ -191,6 +189,15 @@ container.set(key, UUIDDataType.INSTANCE, uuid);
 
 :::
 
+
+## Read-only containers
+:::note
+
+Certain classes, like `ItemStack` or [`OfflinePlayer`](jd:paper:org.bukkit.OfflinePlayer), provide a read-only view of their PDC.
+In contrast to `ItemStack`, `OfflinePlayer` does <u>not</u> provide any way to modify the underlying container.
+
+:::
+
 ## Storing on different objects
 
 :::caution