Remove <br /> tag (illegal in javadoc for parameter)

opentracing-jaxrs2/src/main/java/io/opentracing/contrib/jaxrs2/server/ServerTracingDynamicFeature.java

@@ -204,7 +204,7 @@ public Builder withSkipPattern(String skipPattern) {
         /**
          * @param joinExistingActiveSpan If true, any active span on the current scope will be used as the parent span.
          *                               If false, and a parent span can be extracted from the HTTP request, that span
-         *                               will be used as the parent span instead. <br />
+         *                               will be used as the parent span instead.
          *                               Default is false.
          * @return builder
          */