Update Apache Skywalking vendor link (#5159)

Co-authored-by: opentelemetrybot <107717825+opentelemetrybot@users.noreply.github.com>
Co-authored-by: Fabrizio Ferri-Benedetti <fferribenedetti@splunk.com>

Author: 3 people

data/ecosystem/vendors.yaml

@@ -344,7 +344,7 @@
   commercial: true
 - name: Apache SkyWalking
   nativeOTLP: true
-  url: https://skywalking.apache.org/docs/main/v9.0.0/en/setup/backend/opentelemetry-receiver/
+  url: https://skywalking.apache.org/docs/main/latest/en/setup/backend/otlp-trace/
   contact:
   oss: true
   commercial: false

static/refcache.json

@@ -9171,6 +9171,10 @@
     "StatusCode": 206,
     "LastSeen": "2024-01-18T19:05:54.568865-05:00"
   },
+  "https://skywalking.apache.org/docs/main/latest/en/setup/backend/otlp-trace/": {
+    "StatusCode": 206,
+    "LastSeen": "2024-09-06T19:33:33.371384661Z"
+  },
   "https://skywalking.apache.org/docs/main/v9.0.0/en/setup/backend/opentelemetry-receiver/": {
     "StatusCode": 206,
     "LastSeen": "2024-01-30T06:05:27.619559-05:00"