Changing path for requirements.txt

Signed-off-by: Ryan Lettieri <ryanLettieri@microsoft.com>

Author: RyanLettieri

.github/workflows/pr-validation.yml

@@ -31,7 +31,7 @@ jobs:
         pip install flake8 pytest
         pip install -r requirements.txt
     - name: Install durabletask-azuremanaged dependencies
-      working-directory: durabletask-azuremanaged
+      working-directory: examples/dts
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements.txt