Update learner working-dir path to ~/ai-workflow-course after rename (#73)

Co-authored-by: claude <claude@jpaul.io>
Co-committed-by: claude <claude@jpaul.io>

modules/04-getting-the-ai-out-of-the-browser/README.md

@@ -131,7 +131,7 @@ a model/provider here, this is where the BYO-model choice from above gets made.
 whole point. The convention is **the current working directory is the project**:
 
 ```bash
-cd ~/workflow-course/tasks-app   # the repo from Modules 1–2
+cd ~/ai-workflow-course/tasks-app   # the repo from Modules 1–2
 your-agent                       # launch it from inside the project
 ```
 
@@ -279,7 +279,7 @@ copy-paste loop back in Module 1, now done right.
 
 1. Install the tool and authenticate it (steps 1–2 in "Wiring it up").
 
-2. Point it at the repo (step 3): `cd ~/workflow-course/tasks-app` and launch the agentic CLI from
+2. Point it at the repo (step 3): `cd ~/ai-workflow-course/tasks-app` and launch the agentic CLI from
    there, **or** open that folder in your editor and open the assistant's agent panel.
 
 3. **Confirm read access** (step 4). Ask: