patch: add descriptions and image urls

Author: wackerow

src/data/community-events.json

@@ -770,7 +770,7 @@
     "endDate": "2025-09-07",
     "href": "https://buildersweekistanbul.com/",
     "location": "Istanbul, TR",
-    "description": "",
+    "description": "BWI is a week-long series of permissionless events designed to scale the blockchain development ecosystem.",
     "imageUrl": "https://buildersweekistanbul.com/img/meta/meta.webp"
   },
   {
@@ -779,7 +779,7 @@
     "endDate": "2025-09-01",
     "href": "https://cryptist.org/",
     "location": "Istanbul, TR",
-    "description": "",
+    "description": "Cryptist is an annual, day-long, zero-knowledge community event in Istanbul to learn, connect, and share amongst the Turkish ZK community.",
     "imageUrl": "https://cryptist.org/img/meta.webp"
   },
   {
@@ -789,6 +789,6 @@
     "href": "https://ethistanbul.io/",
     "location": "Istanbul, TR",
     "description": "ETHIstanbul is a conference and hackathon connecting you with global talents, industry professionals, and web3 companies advancing technology.",
-    "imageUrl": ""
+    "imageUrl": "https://ethistanbul.io/_next/image?url=%2F_next%2Fstatic%2Fmedia%2Fistanbul-background.99d6ad2a.webp&w=3840&q=75"
   }
-]
+]