fix build

api/src/main/java/com/velocitypowered/api/event/command/CommandExecuteEvent.java

@@ -9,7 +9,7 @@ import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
- * This event is fired when someone executing command
+ * This event is fired when someone executing command.
  */
 public final class CommandExecuteEvent implements ResultedEvent<CommandResult> {