updated logo of X(twitter before) for readme (#109)

Author: adityajha2005

README.md

@@ -66,7 +66,7 @@ The contents of this repository are licensed under either the BSD 3-clause licen
 
 <p align="left">
     <a href="https://json-schema.org/slack" target="blank" style="margin-right: 5px;"><img align="center" src="https://img.icons8.com/color/48/null/slack-new.png" alt="JSON Schema Slack" height="30" width="40" /></a>
-    <a href="https://twitter.com/jsonschema" target="blank" style="margin-right: 5px;"><img align="center" src="https://raw.githubusercontent.com/rahuldkjain/github-profile-readme-generator/master/src/images/icons/Social/twitter.svg" alt="JSON Schema Twitter" height="30" width="40" /></a>
+    <a href="https://x.com/jsonschema" target="blank" style="margin-right: 5px;"><img align="center" src="https://upload.wikimedia.org/wikipedia/commons/thumb/c/ce/X_logo_2023.svg/450px-X_logo_2023.svg.png" alt="JSON Schema X" height="30" width="40" /></a>
     <a href="https://www.linkedin.com/company/jsonschema" target="blank" style="margin-right: 5px;"><img align="center" src="https://raw.githubusercontent.com/rahuldkjain/github-profile-readme-generator/master/src/images/icons/Social/linked-in-alt.svg" alt="JSON Schema LinkedIn" height="30" width="40" /></a>
     <a href="https://www.youtube.com/@JSONSchemaOrgOfficial" target="blank"><img align="center" src="https://raw.githubusercontent.com/rahuldkjain/github-profile-readme-generator/master/src/images/icons/Social/youtube.svg" alt="JSON Schema YouTube" height="30" width="40" /></a>
 </p>