Add missing annotation

patches/api/0005-Adventure.patch

@@ -2499,7 +2499,7 @@ index c60e1fc1cad1b9889a508602df84840723b7b966..baf0887ec941533f8007f2c7f7ab78f1
              throw new UnsupportedOperationException("Not supported yet.");
          }
 diff --git a/src/main/java/org/bukkit/entity/TextDisplay.java b/src/main/java/org/bukkit/entity/TextDisplay.java
-index 766d6f001d4bc59cbe13d67f539bcae3fce67144..b12cb420f919aeafa8e41356f129f82a8e676505 100644
+index 766d6f001d4bc59cbe13d67f539bcae3fce67144..eff2ee74f4257b18dfc677e16e9ddf970e09a056 100644
 --- a/src/main/java/org/bukkit/entity/TextDisplay.java
 +++ b/src/main/java/org/bukkit/entity/TextDisplay.java
 @@ -13,17 +13,37 @@ public interface TextDisplay extends Display {
@@ -2527,7 +2527,7 @@ index 766d6f001d4bc59cbe13d67f539bcae3fce67144..b12cb420f919aeafa8e41356f129f82a
 +     *
 +     * @return the displayed text
 +     */
-+    net.kyori.adventure.text.Component text();
++    @NotNull net.kyori.adventure.text.Component text();
 +
 +    /**
 +     * Sets the displayed text.