wg-serving: add mention to workstreams

Signed-off-by: Carlos Eduardo Arango Gutierrez <[email protected]>

Author: ArangoGutierrez

wg-serving/README.md

@@ -41,4 +41,14 @@ The [charter](charter.md) defines the scope and governance of the Serving Workin
 - Steering Committee Liaison: Maciej Szulik (**[@soltysh](https://github.com/soltysh)**)
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+## WorkStreams
+
+The WG-Serving will operate in WorkStreams, each focused on a specific area of work. The following WorkStreams are currently active:
+
+- [WS Autoscaling](https://docs.google.com/document/d/1QsN4ubjerEqo5L4bQamOFFS2lmCv5zNPis2Z8gcIITg/edit?usp=sharing)
+<!--- 
+Add Links to the WorkStreams documents
+--->
+- WS MultiHost/MultiNode
+- WS Orchestration
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