Fix incorrect test file reference in docker-tests job

Co-authored-by: endomorphosis <[email protected]>

Author: Copilot

.github/workflows/pdf_processing_ci.yml

@@ -332,7 +332,7 @@ jobs:
         docker run --rm \
           -v ${{ github.workspace }}/tests:/app/tests \
           ipfs-datasets-pdf:test \
-          python -m pytest tests/unit/test_pdf_processing.py::TestPDFProcessor::test_pdf_processor_initialization -v
+          python -m pytest tests/unit/test_pdf_processor_unit.py::TestPDFProcessorInitialization::test_given_no_parameters_when_initializing_pdf_processor_then_creates_with_defaults -v
     
     - name: Test MCP tools in container
       run: |