Fix compilation error

Author: kderusso

server/src/main/java/org/elasticsearch/search/rank/rerank/RerankingRankFeaturePhaseRankShardContext.java

@@ -12,14 +12,14 @@
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.elasticsearch.common.document.DocumentField;
-import org.elasticsearch.common.text.Text;
 import org.elasticsearch.search.SearchHit;
 import org.elasticsearch.search.SearchHits;
 import org.elasticsearch.search.fetch.subphase.highlight.HighlightField;
 import org.elasticsearch.search.rank.RankShardResult;
 import org.elasticsearch.search.rank.context.RankFeaturePhaseRankShardContext;
 import org.elasticsearch.search.rank.feature.RankFeatureDoc;
 import org.elasticsearch.search.rank.feature.RankFeatureShardResult;
+import org.elasticsearch.xcontent.Text;
 
 import java.util.ArrayList;
 import java.util.Arrays;