[doc] chore: update verl meetup (verl-project#4884)

### What does this PR do?

As title

Author: wuxibin89

README.md

@@ -49,6 +49,7 @@ verl is fast with:
 
 ## News
 
+- [2026/01] verl first meetup was successfully held in Shanghai on 01/10, hosted by Volcengine and NVIDIA, the slides has been uploaded to [verl-data](https://github.com/verl-project/verl-data).
 - [2026/01] The `recipe` directory has been migrated to a dedicated repository: [verl-recipe](https://github.com/verl-project/verl-recipe) and added as a submodule. See https://github.com/volcengine/verl/pull/4795. It can be used as it was after `git submodule update --init --recursive recipe`. Note that [`transfer_queue`](verl/experimental/transfer_queue), [`fully_async_policy`](verl/experimental/fully_async_policy), [`one_step_off_policy`](verl/experimental/one_step_off_policy) and [`vla`](verl/experimental/vla) are kept under [`verl/experimental`](verl/experimental) since they are planned to be merged into the main library. Use them through `verl.experimental.{module}`.
 - [2025/12] [Mind Lab](https://macaron.im/mindlab) successfully used [verl](https://github.com/volcengine/verl) and [Megatron-bridge](https://github.com/NVIDIA-NeMo/Megatron-Bridge) to train GRPO Lora for Trillion-parameter model on 64 H800 - See their [techblog](https://macaron.im/mindlab/research/building-trillion-parameter-reasoning-rl-with-10-gpus).
 - [2025/10] verl is presented in the [PyTorch Conference 2025](https://pytorch.org/event/pytorch-conference-2025/).