docs: fix badge x (#1694)

<!--
**Thanks for contributing to Fury.**

**If this is your first time opening a PR on fury, you can refer to
[CONTRIBUTING.md](https://github.com/apache/fury/blob/main/CONTRIBUTING.md).**

Contribution Checklist

- The **Apache Fury (incubating)** community has restrictions on the
naming of pr titles. You can also find instructions in
[CONTRIBUTING.md](https://github.com/apache/fury/blob/main/CONTRIBUTING.md).

- Fury has a strong focus on performance. If the PR you submit will have
an impact on performance, please benchmark it first and provide the
benchmark result here.
-->

## What does this PR do?

<!-- Describe the purpose of this PR. -->
fix badge: twitter -> x

preview:

![image](https://github.com/apache/fury/assets/6711230/b273ba2d-6105-4dab-ba2e-dbf7a3c1d53a)


## Related issues

<!--
Is there any related issue? Please attach here.

- #xxxx0
- #xxxx1
- #xxxx2
-->


## Does this PR introduce any user-facing change?

<!--
If any user-facing interface changes, please [open an
issue](https://github.com/apache/fury/issues/new/choose) describing the
need to do so and update the document if necessary.
-->

- [ ] Does this PR introduce any public API change?
- [ ] Does this PR introduce any binary protocol compatibility change?


## Benchmark

<!--
When the PR has an impact on performance (if you don't know whether the
PR will have an impact on performance, you can submit the PR first, and
if it will have impact on performance, the code reviewer will explain
it), be sure to attach a benchmark data here.
-->

README.md

@@ -4,7 +4,7 @@
 
 [![Build Status](https://img.shields.io/github/actions/workflow/status/apache/fury/ci.yml?branch=main&style=for-the-badge&label=GITHUB%20ACTIONS&logo=github)](https://github.com/apache/fury/actions/workflows/ci.yml)
 [![Slack Channel](https://img.shields.io/badge/slack-join-3f0e40?logo=slack&style=for-the-badge)](https://join.slack.com/t/fury-project/shared_invite/zt-1u8soj4qc-ieYEu7ciHOqA2mo47llS8A)
-[![Twitter](https://img.shields.io/badge/@ApacheFury-follow-blue?logo=twitter&style=for-the-badge)](https://twitter.com/ApacheFury)
+[![X](https://img.shields.io/badge/@ApacheFury-follow-blue?logo=x&style=for-the-badge)](https://x.com/ApacheFury)
 [![Maven Version](https://img.shields.io/maven-central/v/org.apache.fury/fury-core?style=for-the-badge)](https://search.maven.org/#search|gav|1|g:"org.apache.fury"%20AND%20a:"fury-core")