Fix release workflow multi-line run commands

The run: blocks need | for multi-line commands, otherwise YAML
concatenates them into a single line.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: satterly

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
           python-version: 3.11
       - name: Install dependencies
         id: install-deps
-        run:
+        run: |
           python3 -m pip install --upgrade pip
           pip install -r requirements.txt
       - name: nitpick
@@ -48,7 +48,7 @@ jobs:
           python-version: 3.11
       - name: Install dependencies
         id: install-deps
-        run:
+        run: |
           python3 -m pip install --upgrade pip
           pip install -r requirements.txt
       - name: Build HTML