DOC-6604 - thread pools

[paulmoloneyr3]

No description provided.

[vlajos]

Suggested change

	* The default Corda configuration creates a single thread pool whose size is configured by the *[flowThreadPoolSize]({{< relref "#enterpriseconfiguration" >}})* parameter. You can define *multiple* thread pools and assign flows to them; for example, to prioritize particular flows and to segregate them from other flows.
	* The default Corda Enterprise configuration creates a single flow thread pool whose size is configured by the *[flowThreadPoolSize]({{< relref "#enterpriseconfiguration" >}})* parameter. You can define *multiple* thread pools and assign flows to them; for example, to prioritize particular flows and to segregate them from other flows.

[vlajos]

Also, the flowThreadPoolSize option's block probably needs to be updated to reflect that it influences only the default thread pool's size.

And the sum of the sizes of all thread pools sets the upper limit for the maximum number of flows executable in parallel.

So, for example, this first section got slightly outdated:

The number of threads available to handle flows in parallel...

Maybe the last two sections could be moved to the new thread pools page?
And this configuration section could use a link to that page, too.