Change wording for -nvidia flag and added more context (#704)

Author: Titan-Node

ai/orchestrators/start-orchestrator.mdx

@@ -93,7 +93,7 @@ Please follow the steps below to start your **combined AI orchestrator** node.
                     -orchestrator \
                     -serviceAddr 0.0.0.0:8936 \
                     -v 6 \
-                    -nvidia "all" \
+                    -nvidia 0 \
                     -aiWorker \
                     -aiModels /root/.lpData/aiModels.json \
                     -aiModelsDir ~/.lpData/models \
@@ -109,6 +109,8 @@ Please follow the steps below to start your **combined AI orchestrator** node.
 
                 Moreover, the `--network host` flag facilitates communication between the AI Orchestrator and the AI Runner container.
 
+                Lastly, the `-nvidia` can be configured in a few ways. Use a comma seperated list of GPUs ie. `0,1` to activate specific GPU slots, each GPU will need it's own config item in `aiModels.json`. Alternativly we can use `"all"` to activate all GPUs on the machine with a single model loaded in `aiModels.json` (Warning: If different RAM size GPUs are installed it may cause containers to fail if they have less than the required RAM).
+
                 <Warning>Please note that since we use [docker-out-of-docker](https://tdongsi.github.io/blog/2017/04/23/docker-out-of-docker/), the `aiModelsDir` path should be defined as being on the host machine.</Warning>
             </Step>
             <Step title="Confirm Successful Startup of the AI Orchestrator">