Add Override annotations where appropriate

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/help/GenericCommandHelpTopic.java

@@ -59,6 +59,7 @@ public class GenericCommandHelpTopic extends HelpTopic {
         fullText = sb.toString();
     }
 
+    @Override
     public boolean canSee(@NotNull CommandSender sender) {
         if (!command.isRegistered()) {
             // Unregistered commands should not show up in the help

paper-api/src/main/java/org/bukkit/help/HelpTopicComparator.java

@@ -26,6 +26,7 @@ public final class HelpTopicComparator implements Comparator<HelpTopic> {
 
     private HelpTopicComparator() {}
 
+    @Override
     public int compare(@NotNull HelpTopic lhs, @NotNull HelpTopic rhs) {
         return tnc.compare(lhs.getName(), rhs.getName());
     }
@@ -33,6 +34,7 @@ public final class HelpTopicComparator implements Comparator<HelpTopic> {
     public static final class TopicNameComparator implements Comparator<String> {
         private TopicNameComparator(){}
 
+        @Override
         public int compare(@NotNull String lhs, @NotNull String rhs) {
             boolean lhsStartSlash = lhs.startsWith("/");
             boolean rhsStartSlash = rhs.startsWith("/");

paper-api/src/main/java/org/bukkit/help/IndexHelpTopic.java

@@ -44,6 +44,7 @@ public class IndexHelpTopic extends HelpTopic {
         this.allTopics = topics;
     }
 
+    @Override
     public boolean canSee(@NotNull CommandSender sender) {
         if (sender instanceof ConsoleCommandSender) {
             return true;
@@ -59,6 +60,7 @@ public class IndexHelpTopic extends HelpTopic {
         permission = amendedPermission;
     }
 
+    @Override
     @NotNull
     public String getFullText(@NotNull CommandSender sender) {
         StringBuilder sb = new StringBuilder();