CMS-45730 Rename OPTIMIZELY_CMS_HOST to OPTIMIZELY_CMS_URL in env.example and update page.tsx to use the new variable

Author: TRomesh

templates/alloy-template/env.example

@@ -8,7 +8,7 @@ OPTIMIZELY_CMS_CLIENT_ID=
 OPTIMIZELY_CMS_CLIENT_SECRET=
 
 # Root CMS instance. For example "https://<something>.cms.optimizely.com"
-OPTIMIZELY_CMS_HOST=
+OPTIMIZELY_CMS_URL=
 # From here, all environmental variables are optional
 #
 # Endpoint of GraphQL. Use this variable if you use a non-production instance or a different version

templates/alloy-template/src/app/preview/page.tsx

@@ -26,7 +26,7 @@ export default async function Page({ searchParams }: Props) {
   return (
     <>
       <Script
-        src={`${process.env.OPTIMIZELY_CMS_HOST}/util/javascript/communicationinjector.js`}
+        src={`${process.env.OPTIMIZELY_CMS_URL}/util/javascript/communicationinjector.js`}
       ></Script>
       <PreviewComponent />
       <OptimizelyComponent opti={response} />