Fix multiple repositories in API baseline

This happened to work before because the contents of
api-baseline.repo was in api-baseline.repo.simrel so
the error in the pom.xml went undetected until
#551 issue meant api-baseline.repo wasn't in
api-baseline.repo.simrel

pom.xml

@@ -564,6 +564,8 @@
 							<baselines>
 								<repository>
 									<url>${api-baseline.repo}</url>
+								</repository>
+								<repository>
 									<url>${api-baseline.repo.simrel}</url>
 								</repository>
 							</baselines>