Update README.md

Author: balis

examples/ChoiceJoinMerge/README.md

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 # Choice and Join process types
 
 This example demonstrates how to achieve the following workflow patterns:
-- Produce results on a subset of outputs (multi-choice)
-- Activate process on n-out-of-m inputs (discriminator)
-- Combine the above, i.e. "choice" process sends information to "join" process on how many outputs have been activated (structured synchronizing merge)
+- Produce results on a subset of a process' outputs (multi-choice)
+- Activate a process by any n-out-of-m inputs (discriminator)
+- Combine the above, i.e. the "choice" process sends information to the "join" process on how many outputs have been activated (structured synchronizing merge)
 
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 The workflow has two processes: