add perplexity to contextual menu

Author: ethanpalm

docs.json

@@ -344,7 +344,26 @@
     "background": "/images/thumbnail/background.svg"
   },
   "contextual": {
-    "options": ["copy", "view", "chatgpt", "claude"]
+    "options": [
+      "copy",
+      "view",
+      "chatgpt",
+      "claude",
+      {
+        "title": "Open in Perplexity",
+        "description": "Ask questions about this page",
+        "icon": "search",
+        "href": {
+          "base": "https://www.perplexity.ai/search",
+          "query": [
+            {
+              "key": "q",
+              "value": "Ask question about https://mintlify.com/docs$path.md"
+            }
+          ]
+        }
+      }
+    ]
   },
   "redirects": [
     {