Update pulsar_env.sh

Author: gaozhangmin

conf/pulsar_env.sh

@@ -60,7 +60,7 @@ if [[ -n $IS_JAVA_8 ]]; then
   PULSAR_GC_LOG=${PULSAR_GC_LOG:-"-Xloggc:$PULSAR_GC_LOG_DIR/pulsar_gc_%p.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=20M"}
 else
 # After jdk 9, gc log param should config like this. Ignoring version less than jdk 8
-    PULSAR_GC_LOG=${PULSAR_GC_LOG:-"-Xlog:gc*:$PULSAR_GC_LOG_DIR/pulsar_gc_%p.log:time,uptime:filecount=10,filesize=20M"}
+  PULSAR_GC_LOG=${PULSAR_GC_LOG:-"-Xlog:gc*:$PULSAR_GC_LOG_DIR/pulsar_gc_%p.log:time,uptime:filecount=10,filesize=20M"}
 fi
 
 # Extra options to be passed to the jvm