Fix maven-badges URL

wrt #1122, #1128

Author: k163377

README.md

@@ -1,4 +1,4 @@
-[![Maven Central](https://maven-badges.sml.io/maven-central/com.fasterxml.jackson.module/jackson-module-kotlin/badge.svg)](https://mvnrepository.com/artifact/com.fasterxml.jackson.module/jackson-module-kotlin)
+[![Maven Central](https://maven-badges.sml.io/sonatype-central/com.fasterxml.jackson.module/jackson-module-kotlin/badge.svg)](https://mvnrepository.com/artifact/com.fasterxml.jackson.module/jackson-module-kotlin)
 [![Change log](https://img.shields.io/badge/change%20log-%E2%96%A4-yellow.svg)](./release-notes/VERSION-2.x)
 [![Tidelift](https://tidelift.com/badges/package/maven/com.fasterxml.jackson.module:jackson-module-kotlin)](https://tidelift.com/subscription/pkg/maven-com-fasterxml-jackson-module-jackson-module-kotlin?utm_source=maven-com-fasterxml-jackson-module-jackson-module-kotlin&utm_medium=referral&utm_campaign=readme)
 [![Kotlin Slack](https://img.shields.io/badge/chat-kotlin%20slack-orange.svg)](https://slack.kotlinlang.org/)