add check links workflow

Signed-off-by: YunLiu <[email protected]>

.github/workflows/check-links.yml

@@ -0,0 +1,26 @@
+name: Check Links
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  markdown-link-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository content
+        uses: actions/checkout@v3
+
+      - name: Install Rust (required for Lychee)
+      run: sudo apt update && sudo apt install -y curl build-essential && curl https://sh.rustup.rs -sSf | sh -s -- -y
+
+      - name: Add Rust to PATH
+        run: source $HOME/.cargo/env
+
+      - name: Install Lychee
+        run: cargo install lychee
+
+      - name: Run Lychee to check links
+        run: lychee --verbose --all

3d_segmentation/swin_unetr_btcv_segmentation_3d.ipynb

@@ -319,7 +319,7 @@
     "\n",
     "3. Make a JSON file to define train/val split and other relevant parameters. Place the JSON file at `./data/dataset_0.json`.\n",
     "\n",
-    "    You can download an example of the JSON file [here](https://drive.google.com/file/d/1qcGh41p-rI3H_sQ0JwOAhNiQSXriQqGi/view?usp=sharing), or, equivalently, use the following `wget` command. If you would like to use this directly, please move it into the `./data` folder."
+    "    You can download an example of the JSON file [here](https://developer.download.nvidia.com/assets/Clara/monai/tutorials/swin_unetr_btcv_dataset_0.json), or, equivalently, use the following `wget` command. If you would like to use this directly, please move it into the `./data` folder."
    ]
   },
   {