Use double quotes for jq JSON to avoid YAML parsing issues

Author: jamiew

.github/workflows/generate-site.yml

@@ -36,7 +36,7 @@ jobs:
           jq -n \
             --arg model "claude-sonnet-4-20250514" \
             --rawfile content full_prompt.txt \
-            '{ model: $model, max_tokens: 8192, messages: [{ role: "user", content: $content }] }' \
+            "{model: \$model, max_tokens: 8192, messages: [{role: \"user\", content: \$content}]}" \
             > request.json
 
           # Call Claude API