Merge pull request #78 from monarch-initiative/75-docs-build-failing-…

…due-to-failure-to-install-mermaid-plugin

One more fix for docs workflow

.github/workflows/docs.yml

@@ -14,6 +14,8 @@ jobs:
     steps:
       - name: Checkout main
         uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
 
       - name: Install dependencies
         run: |