HDFS-11223. Fix typos in HttpFs documentations. Contributed by Yiqun Lin.

(cherry picked from commit 4c2cf5560f6d952cfa36ef656f0b04dc3150f8b3)

hadoop-hdfs-project/hadoop-hdfs-httpfs/src/site/markdown/ServerSetup.md.vm

@@ -50,7 +50,7 @@ IMPORTANT: Replace `#HTTPFSUSER#` with the Unix user that will start the HttpFS
 Restart Hadoop
 --------------
 
-You need to restart Hadoop for the proxyuser configuration ot become active.
+You need to restart Hadoop for the proxyuser configuration to become active.
 
 Start/Stop HttpFS
 -----------------

hadoop-hdfs-project/hadoop-hdfs-httpfs/src/site/markdown/index.md

@@ -15,7 +15,7 @@
 Hadoop HDFS over HTTP - Documentation Sets
 ==========================================
 
-HttpFS is a server that provides a REST HTTP gateway supporting all HDFS File System operations (read and write). And it is inteoperable with the **webhdfs** REST HTTP API.
+HttpFS is a server that provides a REST HTTP gateway supporting all HDFS File System operations (read and write). And it is interoperable with the **webhdfs** REST HTTP API.
 
 HttpFS can be used to transfer data between clusters running different versions of Hadoop (overcoming RPC versioning issues), for example using Hadoop DistCP.
 
@@ -23,9 +23,9 @@ HttpFS can be used to access data in HDFS on a cluster behind of a firewall (the
 
 HttpFS can be used to access data in HDFS using HTTP utilities (such as curl and wget) and HTTP libraries Perl from other languages than Java.
 
-The **webhdfs** client FileSytem implementation can be used to access HttpFS using the Hadoop filesystem command (`hadoop fs`) line tool as well as from Java applications using the Hadoop FileSystem Java API.
+The **webhdfs** client FileSystem implementation can be used to access HttpFS using the Hadoop filesystem command (`hadoop fs`) line tool as well as from Java applications using the Hadoop FileSystem Java API.
 
-HttpFS has built-in security supporting Hadoop pseudo authentication and HTTP SPNEGO Kerberos and other pluggable authentication mechanims. It also provides Hadoop proxy user support.
+HttpFS has built-in security supporting Hadoop pseudo authentication and HTTP SPNEGO Kerberos and other pluggable authentication mechanisms. It also provides Hadoop proxy user support.
 
 How Does HttpFS Works?
 ----------------------