Fix //chunk text and clarify the y-index in the help text.

e0b8b4856d22bc3edc7879e291a5502b79664fc3

Co-Authored-By: wizjany <568161+wizjany@users.noreply.github.com>

worldedit-core/src/main/java/com/sk89q/worldedit/command/SelectionCommands.java

@@ -212,7 +212,8 @@ public class SelectionCommands {
 
     @Command(
         name = "/chunk",
-        desc = "Set the selection to your current chunk."
+        desc = "Set the selection to your current chunk.",
+        descFooter = "This command selects 256-block-tall areas,\nwhich can be specified by the y-coordinate.\nE.g. -c x,1,z will select from y=256 to y=511."
     )
     @Logging(POSITION)
     @CommandPermissions("worldedit.selection.chunk")

worldedit-core/src/main/resources/lang/strings.json

@@ -282,7 +282,7 @@
     "worldedit.hpos.no-block": "No block in sight!",
     "worldedit.hpos.already-set": "Position already set.",
     "worldedit.chunk.selected-multiple": "Chunks selected: ({0}, {1}) - ({2}, {3})",
-    "worldedit.chunk.selected": "Chunk selected: {0}, {1}",
+    "worldedit.chunk.selected": "Chunk selected: {0}, {1}, {2}",
     "worldedit.wand.invalid": "Wand item is mis-configured or disabled.",
     "worldedit.wand.selwand.info": "Left click: select pos #1; Right click: select pos #2",
     "worldedit.wand.selwand.now.tool": "The selection wand is now a normal tool. You can disable it with {0} and rebind it to any item with {1} or get a new wand with {2}.",