fix the test

Author: Nan Zhu

sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/HadoopFsRelationSuite.scala

@@ -44,7 +44,7 @@ class HadoopFsRelationSuite extends QueryTest with SharedSQLContext {
   test("SPARK-22790: spark.sql.sources.compressionFactor takes effect") {
     import testImplicits._
     Seq(1.0, 0.5).foreach { compressionFactor =>
-      withSQLConf("spark.sql.sources.compressionFactor" -> compressionFactor.toString,
+      withSQLConf("spark.sql.sources.fileCompressionFactor" -> compressionFactor.toString,
         "spark.sql.autoBroadcastJoinThreshold" -> "400") {
         withTempPath { workDir =>
           // the file size is 740 bytes