Search config change (MystenLabs#14615)

## Description 

Describe the changes or additions included in this PR.

## Test Plan 

How did you test the new or updated feature?

---
If your changes are not user-facing and not a breaking change, you can
skip the following section. Otherwise, please indicate what changed, and
then add to the Release Notes section as highlighted during the release
process.

### Type of Change (Check all that apply)

- [ ] protocol change
- [ ] user-visible impact
- [ ] breaking change for a client SDKs
- [ ] breaking change for FNs (FN binary must upgrade)
- [ ] breaking change for validators or node operators (must upgrade
binaries)
- [ ] breaking change for on-chain data layout
- [ ] necessitate either a data wipe or data migration

### Release notes

docs/site/docusaurus.config.js

@@ -105,14 +105,6 @@ const config = {
   themeConfig:
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
-      announcementBar: {
-        id: "search_notice",
-        content:
-          "Welcome to the new implementation of the Sui documentation site. Please expect site search to be unreliable during initial indexing (~48 hours).",
-        backgroundColor: "#4ca2ff",
-        textColor: "#111111",
-        isCloseable: true,
-      },
       algolia: {
         // The application ID provided by Algolia
         appId: "ZF283DJAYX",
@@ -123,7 +115,7 @@ const config = {
         indexName: "sui",
 
         // Optional: see doc section below
-        contextualSearch: true,
+        contextualSearch: false,
 
         // Optional: Specify domains where the navigation should occur through window.location instead on history.push. Useful when our Algolia config crawls multiple documentation sites and we want to navigate with window.location.href to them.
         // externalUrlRegex: "external\\.com|domain\\.com",
@@ -135,7 +127,7 @@ const config = {
         //},
 
         // Optional: Algolia search parameters
-        searchParameters: {},
+        //searchParameters: {},
 
         // Optional: path for search page that enabled by default (`false` to disable it)
         searchPagePath: "search",