[SPARK-4701] Typo in sbt/sbt

Modified typo.

Author: Masayoshi TSUZUKI <tsudukim@oss.nttdata.co.jp>

Closes #3560 from tsudukim/feature/SPARK-4701 and squashes the following commits:

ed2a3f1 [Masayoshi TSUZUKI] Another whitespace position error.
1af3a35 [Masayoshi TSUZUKI] [SPARK-4701] Typo in sbt/sbt

(cherry picked from commit 96786e3)
Signed-off-by: Andrew Or <andrew@databricks.com>

Author: tsudukim

sbt/sbt

@@ -71,8 +71,8 @@ Usage: $script_name [options]
   -Dkey=val          pass -Dkey=val directly to the java runtime
   -J-X               pass option -X directly to the java runtime
                      (-J is stripped)
-  -S-X               add -X to sbt's scalacOptions (-J is stripped)
-  -PmavenProfiles     Enable a maven profile for the build.
+  -S-X               add -X to sbt's scalacOptions (-S is stripped)
+  -PmavenProfiles    Enable a maven profile for the build.
 
 In the case of duplicated or conflicting options, the order above
 shows precedence: JAVA_OPTS lowest, command line options highest.