feat(content api): search result for cli reference (#35488)

## Before

Search results ignored if they are CLI references.

## After

Search results returned for CLI references.

apps/docs/scripts/search/sources/index.ts

@@ -116,7 +116,7 @@ export async function fetchCliLibReferenceSource() {
   return new CliReferenceLoader(
     'cli',
     '/reference/cli',
-    { title: 'CLI Reference' },
+    { title: 'CLI Reference', platform: 'cli' },
     'spec/cli_v1_commands.yaml',
     'spec/common-cli-sections.json'
   ).load()