Update schemaUtils.js

added clean web hook name

lib/schemaUtils.js

@@ -4642,7 +4642,7 @@ module.exports = {
         if (schemaPathObj.kind === 'webhooks') {
           rootCollectionVariables = this.convertToPmCollectionVariables(
             schema.baseUrlVariables,
-            schemaPath.startsWith('/') ? schemaPath.slice(1) : schemaPath,
+            schemaPath.startsWith('/') ? this.cleanWebhookName(schemaPath.slice(1)) : this.cleanWebhookName(schemaPath),
             schema.baseUrl
           );
         }