[NO ISSUE][DOC] Update README.md

Change-Id: I6d455a600d11fe7f396d9044706e5a2f10cebfbf
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2896
Reviewed-by: Ian Maxon <imaxon@apache.org>
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Michael Blow <mblow@apache.org>
diff --git a/README.md b/README.md
index bf05c6e..e1a2d5a 100644
--- a/README.md
+++ b/README.md
@@ -85,11 +85,12 @@
 
         http://localhost:19001
 
-* Read more [documentations](https://ci.apache.org/projects/asterixdb/index.html) to learn the data model, query language, and how to create a cluster instance.
+* Read more [documentation](https://ci.apache.org/projects/asterixdb/index.html) to learn the data model, query language, and how to create a cluster instance.
 
 ## Documentation
 
 * [master](https://ci.apache.org/projects/asterixdb/index.html) |
+  [0.9.3](http://asterixdb.apache.org/docs/0.9.3/index.html) |
   [0.9.2](http://asterixdb.apache.org/docs/0.9.2/index.html) |
   [0.9.1](http://asterixdb.apache.org/docs/0.9.1/index.html) |
   [0.9.0](http://asterixdb.apache.org/docs/0.9.0/index.html)