Fix CI build errors

- Add User-Agent header for lwn.net in mlc_config.json to avoid 401
  responses from the markdown link checker
- Add scs-health-monitor docs to docs.package.json so referenced files
  are fetched during the build

Signed-off-by: Daniel Gerber <394442-gerbsen@users.noreply.gitlab.com>

Author: Daniel Gerber

docs.package.json

@@ -53,6 +53,17 @@
     "target": "docs/04-operating-scs/01-guides",
     "label": "openstack-health-monitor"
   },
+  {
+    "repo": "SovereignCloudStack/scs-health-monitor",
+    "source": [
+      "docs/overview.md",
+      "docs/Workflow.md",
+      "docs/Testflow.md",
+      "docs/ObservabilityStack/SetupObservabilityStack.md"
+    ],
+    "target": "docs/04-operating-scs/components",
+    "label": "scs-health-monitor"
+  },
   {
     "repo": "SovereignCloudStack/central-api",
     "source": "docs/*.md",

mlc_config.json

@@ -10,6 +10,12 @@
       "headers": {
         "Accept-Encoding": "zstd, br, gzip, deflate"
       }
+    },
+    {
+      "urls": ["https://lwn.net"],
+      "headers": {
+        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0 Safari/537.36"
+      }
     }
   ],
   "aliveStatusCodes": [200, 300]