HADOOP-14256. [S3A DOC] Correct the format for "Seoul" example. Contributed by Brahma Reddy Battula.

(cherry picked from commit 0d053eeb3002f348d34cf3aac5b43333af8ff10a)

hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md

@@ -1053,6 +1053,7 @@ Frankfurt
 ```
 
 Seoul
+
 ```xml
 <property>
   <name>fs.s3a.endpoint</name>