Update setup instructions in example-agent.mdx

Added instructions to skip skill installation during setup.

Signed-off-by: Nico Tonozzi <ntonozzi@nvidia.com>

Author: nicot

docs/get-started/example-agent.mdx

@@ -36,7 +36,8 @@ uv run nemo setup
 ```
 
 Follow the prompts to connect a model provider and select the default and fast
-models. Press Enter to use the default model for both.
+models. Press Enter to use the default model for both. You can skip the skill
+installation for the purposes of this tutorial.
 
 Open [NeMo Studio](http://localhost:8080) when setup finishes.
 
@@ -168,4 +169,4 @@ sbx rm nemo-experimentalist
 ```
 
 To run the loop on your own agent, continue with the
-[agent onboarding guide](/documentation/get-started).
+[agent onboarding guide](/documentation/get-started).