Update supported languages (#4241)

about.md language info was slightly outdated
apache · Jan 30, 2019 · b3a3ef4 · b3a3ef4
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diff --git a/docs/about.md b/docs/about.md
@@ -24,7 +24,7 @@ OpenWhisk is an event-driven compute platform also referred to as Serverless com
 
 Examples of events include changes to database records, IoT sensor readings that exceed a certain temperature, new code commits to a GitHub repository, or simple HTTP requests from web or mobile apps. Events from external and internal event sources are channeled through a trigger, and rules allow actions to react to these events.
 
-Actions can be small snippets of JavaScript or Swift code, or custom binary code embedded in a Docker container. Actions in OpenWhisk are instantly deployed and executed whenever a trigger fires. The more triggers fire, the more actions get invoked. If no trigger fires, no action code is running, so there is no cost.
+Actions can be small snippets of code (JavaScript, Swift and many other languages are supported), or custom binary code embedded in a Docker container. Actions in OpenWhisk are instantly deployed and executed whenever a trigger fires. The more triggers fire, the more actions get invoked. If no trigger fires, no action code is running, so there is no cost.
 
 In addition to associating actions with triggers, it is possible to directly invoke an action by using the OpenWhisk API, CLI, or iOS SDK. A set of actions can also be chained without having to write any code. Each action in the chain is invoked in sequence with the output of one action passed as input to the next in the sequence.