Fix upstream javadocs

paper-api/src/main/java/org/bukkit/plugin/Plugin.java

@@ -18,7 +18,7 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface Plugin extends TabExecutor {
     /**
-     * Returns the folder that the plugin data's files are located in. The
+     * Returns the folder that the plugin data files are located in. The
      * folder may not yet exist.
      *
      * @return The folder
@@ -27,9 +27,9 @@ public interface Plugin extends TabExecutor {
     public File getDataFolder();
 
     /**
-     * Returns the plugin.yaml file containing the details for this plugin
+     * Returns the plugin.yml file containing the details for this plugin
      *
-     * @return Contents of the plugin.yaml file
+     * @return Contents of the plugin.yml file
      * @deprecated May be inaccurate due to different plugin implementations.
      * @see Plugin#getPluginMeta()
      */

paper-api/src/main/java/org/bukkit/plugin/java/JavaPlugin.java

@@ -69,7 +69,7 @@ public abstract class JavaPlugin extends PluginBase {
     }
 
     /**
-     * Returns the folder that the plugin data's files are located in. The
+     * Returns the folder that the plugin data files are located in. The
      * folder may not yet exist.
      *
      * @return The folder.
@@ -127,9 +127,9 @@ public abstract class JavaPlugin extends PluginBase {
     }
 
     /**
-     * Returns the plugin.yaml file containing the details for this plugin
+     * Returns the plugin.yml file containing the details for this plugin
      *
-     * @return Contents of the plugin.yaml file
+     * @return Contents of the plugin.yml file
      * @deprecated No longer applicable to all types of plugins
      */
     @NotNull

paper-api/src/main/java/org/bukkit/plugin/messaging/PluginMessageRecipient.java

@@ -31,7 +31,8 @@ public interface PluginMessageRecipient {
 
     /**
      * Gets a set containing all the Plugin Channels that this client is
-     * listening on.
+     * listening on. Does not contain the BungeeCord channel due to its
+     * special status.
      *
      * @return Set containing all the channels that this client may accept.
      */