Update with GitHub Discussions (#6186)

Author: rohitgr7

README.md

@@ -29,7 +29,6 @@ Scale your models, not the boilerplate.**
 
 [![ReadTheDocs](https://readthedocs.org/projects/pytorch-lightning/badge/?version=stable)](https://pytorch-lightning.readthedocs.io/en/stable/)
 [![Slack](https://img.shields.io/badge/slack-chat-green.svg?logo=slack)](https://join.slack.com/t/pytorch-lightning/shared_invite/zt-f6bl2l0l-JYMK3tbAgAmGRrlNr00f1A)
-[![Discourse status](https://img.shields.io/discourse/status?server=https%3A%2F%2Fforums.pytorchlightning.ai)](https://forums.pytorchlightning.ai/)
 [![license](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/PytorchLightning/pytorch-lightning/blob/master/LICENSE)
 
 <!--

docs/source/starter/new-project.rst

@@ -773,7 +773,8 @@ Community
 **********
 Our community of core maintainers and thousands of expert researchers is active on our
 `Slack <https://join.slack.com/t/pytorch-lightning/shared_invite/zt-f6bl2l0l-JYMK3tbAgAmGRrlNr00f1A>`_
-and `Forum <https://forums.pytorchlightning.ai/>`_. Drop by to hang out, ask Lightning questions or even discuss research!
+and `GitHub Discussions <https://github.com/PyTorchLightning/pytorch-lightning/discussions>`_. Drop by
+to hang out, ask Lightning questions or even discuss research!
 
 
 -------------

notebooks/04-transformers-text-classification.ipynb

@@ -23,7 +23,7 @@
     "---\n",
     "  - Give us a ⭐ [on Github](https://www.github.com/PytorchLightning/pytorch-lightning/)\n",
     "  - Check out [the documentation](https://pytorch-lightning.readthedocs.io/en/latest/)\n",
-    "  - Ask a question on [the forum](https://forums.pytorchlightning.ai/)\n",
+    "  - Ask a question on [GitHub Discussions](https://github.com/PyTorchLightning/pytorch-lightning/discussions/)\n",
     "  - Join us [on Slack](https://join.slack.com/t/pytorch-lightning/shared_invite/zt-f6bl2l0l-JYMK3tbAgAmGRrlNr00f1A)\n",
     "\n",
     "  - [HuggingFace datasets](https://github.com/huggingface/datasets)\n",

notebooks/06-mnist-tpu-training.ipynb

@@ -40,7 +40,7 @@
         "  - Give us a ⭐ [on Github](https://www.github.com/PytorchLightning/pytorch-lightning/)\n",
         "  - Check out [the documentation](https://pytorch-lightning.readthedocs.io/en/latest/)\n",
         "  - Join us [on Slack](https://join.slack.com/t/pytorch-lightning/shared_invite/zt-f6bl2l0l-JYMK3tbAgAmGRrlNr00f1A)\n",
-        "  - Ask a question on our [official forum](https://forums.pytorchlightning.ai/)"
+        "  - Ask a question on our [GitHub Discussions](https://github.com/PyTorchLightning/pytorch-lightning/discussions/)"
       ]
     },
     {