Fix 'RDF$J' typo in Maven section

Author: botimer

doc/programming/01-setup.adoc

@@ -12,7 +12,7 @@ RDF4J is available from the Central Repository, which means you don’t need to
 
 === Maven Artifacts
 
-The groupId for all RDF4J core artifacts is org.eclipse.rdf4j. To include a maven dependency in your project that automatically gets you the entire RDF$J core framework, use artifactId rdf4j-runtime: 
+The groupId for all RDF4J core artifacts is org.eclipse.rdf4j. To include a maven dependency in your project that automatically gets you the entire RDF4J core framework, use artifactId rdf4j-runtime: 
 
 [source,xml]
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