Aura update for parallel runtime (#1076)

Author: JPryce-Aklundh

modules/ROOT/pages/planning-and-tuning/runtimes/reference.adoc

@@ -78,11 +78,11 @@ For more information about configuration settings in Neo4j, see the link:{neo4j-
 [[aura]]
 == Aura
 
-The parallel runtime can only be run on Aura instances with 3 or more CPUs.
-This means that the parallel runtime is not available to users of AuraDB Free.
-Nor is it available on instances of AuraDB Professional, AuraDB Business Critical, and AuraDB Virtual Dedicated Cloud with 2 or fewer CPUs.
+The parallel runtime is available on all non-free AuraDB instances, regardless of their size or CPU count.
+Additionally, when a query is run with parallel runtime on an Aura instance, it can utilize up to the total number of available CPUs.
 
-Attempting to run a query with the parallel runtime on instances with 2 or fewer CPUs will generate the following error message:
+The parallel runtime is disabled on AuraDB Free instances.
+Attempting to run a query with parallel runtime on AuraDB Free will throw the following error message:
 
 .Error message
 [source,error]
@@ -92,7 +92,7 @@ Parallel runtime has been disabled, please enable it or upgrade to a bigger Aura
 
 [TIP]
 ====
-Users of AuraDB Professional, AuraDB Business Critical, and AuraDB Virtual Dedicated Cloud select the number of available CPUs when creating an instance.
+Users of AuraDB Professional, AuraDB Business Critical, and AuraDB Virtual Dedicated Cloud select the the size and the number of available CPUs when creating an instance.
 More information about the various tiers of AuraDB can be found on the link:https://neo4j.com/pricing/[Neo4j Pricing page].
 ====