fix pip install run

Author: myseq

.github/workflows/ci.yml

@@ -25,6 +25,6 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install mkdocs-material install mkdocs-open-in-new-tab
+      - run: pip install mkdocs-material mkdocs-open-in-new-tab
       - run: mkdocs gh-deploy --force