MAINT: add pyro-ppl to build env (#455)

* MAINT: add pyro-ppl to build env

* remove discourse from troubleshooting page

Author: mmcky

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
         run: |
           pip install --pre torch torchvision torchaudio --index-url https://download.pytorch.org/whl/nightly/cu128
           pip install --upgrade "jax[cuda12-local]"
-          pip install numpyro  
+          pip install numpyro pyro-ppl
           python scripts/test-jax-install.py
       - name: Check nvidia Drivers
         shell: bash -l {0}

lectures/troubleshooting.md

@@ -69,7 +69,5 @@ One way to give feedback is to raise an issue through our [issue tracker](https:
 Please be as specific as possible.  Tell us where the problem is and as much
 detail about your local set up as you can provide.
 
-Another feedback option is to use our [discourse forum](https://discourse.quantecon.org/).
-
 Finally, you can provide direct feedback to [[email protected]](mailto:[email protected])