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p2p/simulations: improve README language (#24051)

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p2p/simulations/README.md
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@ -1,7 +1,7 @@
# devp2p Simulations
The `p2p/simulations` package implements a simulation framework which supports
creating a collection of devp2p nodes, connecting them together to form a
The `p2p/simulations` package implements a simulation framework that supports
creating a collection of devp2p nodes, connecting them to form a
simulation network, performing simulation actions in that network and then
extracting useful information.
@ -65,10 +65,10 @@ localhost ports.
## Network
A simulation network is created with an ID and default service (which is used
if a node is created without an explicit service), exposes methods for
creating, starting, stopping, connecting and disconnecting nodes, and emits
events when certain actions occur.
A simulation network is created with an ID and default service. The default
service is used if a node is created without an explicit service. The
network has exposed methods for creating, starting, stopping, connecting
and disconnecting nodes. It also emits events when certain actions occur.
### Events
@ -80,7 +80,7 @@ A simulation network emits the following events:
The events have a "control" flag which when set indicates that the event is the
outcome of a controlled simulation action (e.g. creating a node or explicitly
connecting two nodes together).
connecting two nodes).
This is in contrast to a non-control event, otherwise called a "live" event,
which is the outcome of something happening in the network as a result of a
@ -98,12 +98,12 @@ network and then wait for expectations to be met.
With a running simulation network, the `Simulation.Run` method can be called
with a `Step` which has the following fields:
* `Action` - a function which performs some action in the network
* `Action` - a function that performs some action in the network
* `Expect` - an expectation function which returns whether or not a
given node meets the expectation
* `Trigger` - a channel which receives node IDs which then trigger a check
* `Trigger` - a channel that receives node IDs which then trigger a check
of the expectation function to be performed against that node
As a concrete example, consider a simulated network of Ethereum nodes. An
@ -116,7 +116,7 @@ the expectation and what network events were emitted during the step run.
## HTTP API
The simulation framework includes a HTTP API which can be used to control the
The simulation framework includes a HTTP API that can be used to control the
simulation.
The API is initialised with a particular node adapter and has the following