HDDS-628. Fix outdated names used in HDDS documentations.

hadoop-ozone/docs/content/Dozone.md

@@ -63,14 +63,14 @@ Useful Docker & Ozone Commands
 
 If you make any modifications to ozone, the simplest way to test it is to run freon and unit tests.
 
-Here are the instructions to run corona in a docker based cluster.
+Here are the instructions to run freon in a docker based cluster.
 
 {{< highlight bash >}}
 docker-compose exec datanode bash
 {{< /highlight >}}
 
 This will open a bash shell on the data node container.
-Now we can execute corona for load generation.
+Now we can execute freon for load generation.
 
 {{< highlight bash >}}
 ozone freon randomkeys --numOfVolumes=10 --numOfBuckets 10 --numOfKeys 10

hadoop-ozone/docs/content/JavaApi.md

@@ -42,7 +42,7 @@ can use
 OzoneClient ozClient = OzoneClientFactory.getRestClient();
 {{< /highlight >}}
 
-And to get a a RPC client we can call
+And to get a RPC client we can call
 
 {{< highlight java >}}
 OzoneClient ozClient = OzoneClientFactory.getRpcClient();

hadoop-ozone/docs/content/OzoneManager.md

@@ -70,7 +70,7 @@ We are hopeful that this leads to a more straightforward way of discovering sett
 OM and SCM
 -------------------
 [Storage container manager]({{< ref "Hdds.md" >}}) or (SCM) is the block manager
- for ozone. When a client requests OM for a set of data nodes to write data, OM talk to SCM and gets a block.
+ for ozone. When a client requests OM for a set of data nodes to write data, OM talks to SCM and gets a block.
 
 A block returned by SCM contains a pipeline, which is a set of nodes that we participate in that block replication.
 

hadoop-ozone/docs/content/Settings.md

@@ -43,7 +43,7 @@ requests blocks from SCM, to which clients can write data.
 
 ## Setting up an Ozone only cluster
 
-* Please untar the  ozone-0.2.1-SNAPSHOT to the directory where you are going
+* Please untar the ozone-<version> to the directory where you are going
 to run Ozone from. We need Ozone jars on all machines in the cluster. So you
 need to do this on all machines in the cluster.