Fix Maven variable

Author: KarstenSchnitter

cf-java-logging-support-opentelemetry-agent-extension/pom.xml

@@ -17,7 +17,7 @@
 
     <properties>
         <opentelemetry.sdk.version>1.60.1</opentelemetry.sdk.version>
-        <opentelemetry.sdk-alpha.version>${opentelemetry.sdk.version}-alpha</opentelemetry.sdk.version>
+        <opentelemetry.sdk-alpha.version>${opentelemetry.sdk.version}-alpha</opentelemetry.sdk-alpha.version>
     </properties>
 
     <dependencyManagement>