Minor typo

Changed 'folowing' to 'following'.

Author: tbeermann

docs/plugins/discovery-ec2.asciidoc

@@ -290,7 +290,7 @@ available on AWS-based infrastructure from http://www.elastic.co/cloud.
 ===== Storage
 
 EC2 instances offer a number of different kinds of storage. Please be aware of
-the folowing when selecting the storage for your cluster:
+the following when selecting the storage for your cluster:
 
 * http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html[Instance
 Store] is recommended for {es} clusters as it offers excellent performance and