Merge pull request #167 from alanocallaghan/catalog-link

Add forum link and change cmd to bat for sphinx warning

Author: petebankhead

docs/deep/gpu.md

@@ -219,7 +219,7 @@ println ai.djl.engine.Engine.getEngine("PyTorch")
 
 If all has gone well, you should see something like this:
 
-```cmd
+```bat
 INFO: PyTorch graph executor optimizer is enabled, this may impact your inference latency and throughput. See: https://docs.djl.ai/docs/development/inference_performance_optimization.html#graph-executor-optimization
 INFO: Number of inter-op threads is 4
 INFO: Number of intra-op threads is 4

docs/intro/extensions.md

@@ -69,6 +69,9 @@ If you are a QuPath extension developer and want to create your own catalog, you
 Sometimes, the extension you want to install is not present in a catalog.
 In that case, see the [Managing extensions without the extension manager](managing-without-manager) section.
 
+:::{Tip}
+You can find some useful community-provided catalogs on the [image.sc forum](https://forum.image.sc/tag/qupath-catalog).
+:::
 
 ### Installing extensions