Fix: ci.yml - requirements.txt (EmuDeck#2)

Author: rawdatafeel

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install requirements.txt
+      - run: pip install -r docs/requirements.txt
       - run: pip install mkdocs-material
       - run: mkdocs gh-deploy --force