Add markdown-it-attrs

so that I can make nofollow links

package-lock.json

@@ -12,6 +12,7 @@
         "@11ty/eleventy": "^1.0.1",
         "@sindresorhus/slugify": "^1.1.0",
         "markdown-it-anchor": "^8.6.4",
+        "markdown-it-attrs": "^4.1.4",
         "markdown-it-obsidian": "github:raddevon/markdown-it-obsidian",
         "simpledotcss": "^2.1.0"
       }
@@ -1948,6 +1949,18 @@
         "markdown-it": "*"
       }
     },
+    "node_modules/markdown-it-attrs": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/markdown-it-attrs/-/markdown-it-attrs-4.1.4.tgz",
+      "integrity": "sha512-53Zfv8PTb6rlVFDlD106xcZHKBSsRZKJ2IW/rTxEJBEVbVaoxaNsmRkG0HXfbHl2SK8kaxZ2QKqdthWy/QBwmA==",
+      "dev": true,
+      "engines": {
+        "node": ">=6"
+      },
+      "peerDependencies": {
+        "markdown-it": ">= 9.0.0"
+      }
+    },
     "node_modules/markdown-it-obsidian": {
       "version": "1.1.0",
       "resolved": "git+ssh://git@github.com/raddevon/markdown-it-obsidian.git#e7aa6eaa1735367abc58c3d18428c20c6d226a2d",