Don't host rc docs for kubedb

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

data/products/kubedb.json

@@ -174,7 +174,7 @@
     },
     {
       "version": "v2026.6.18-rc.2",
-      "hostDocs": true,
+      "hostDocs": false,
       "info": {
         "autoscaler": "v0.50.0-rc.2",
         "cli": "v0.65.0-rc.2",
@@ -189,7 +189,7 @@
     },
     {
       "version": "v2026.6.5-rc.1",
-      "hostDocs": true,
+      "hostDocs": false,
       "info": {
         "autoscaler": "v0.50.0-rc.1",
         "cli": "v0.65.0-rc.1",
@@ -204,7 +204,7 @@
     },
     {
       "version": "v2026.5.18-rc.0",
-      "hostDocs": true,
+      "hostDocs": false,
       "info": {
         "autoscaler": "v0.50.0-rc.0",
         "cli": "v0.65.0-rc.0",