fix: zkstack readme update broken links and wording (#3375)

## What ❔

Hi @Deniallugo @popzxc 👋

Was playing with zkstack cli today. 

This PR is just fixing a couple of broken links and updating a bit of
wording in `zkstack_cli/README.md`.

PS: sidenote, "EVM emulator" is not explained in this readme, and
"Enable EVM emulator?" in interactive mode will be confusing to people
(they likely wont realize that it is emulating EVM equivalence but not
required for most chains + will be more expensive)

## Why ❔

Possibly a bit OCD, ie "Zk" being wrongly cased in one instance stayed
in my mind and bothered me hahahah 😉
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## Checklist

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- [x] PR title corresponds to the body of PR (we generate changelog
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- [x] Tests for the changes have been added / updated.
- [x] Documentation comments have been added / updated.
- [x] Code has been formatted via `zkstack dev fmt` and `zkstack dev
lint`.

zkstack_cli/README.md

@@ -1,11 +1,11 @@
 # ZK Stack CLI
 
-Toolkit for creating and managing ZK Stack chains. `ZK Stack CLI` facilitates the creation and management of ZK Stacks.
-Commands are interactive but can also accept arguments via the command line.
+Toolkit for creating and managing ZK Stack chains. `ZK Stack CLI` facilitates the creation and management of ZK Stack
+ecosystems. Commands are interactive but can also accept arguments via the command line.
 
 ### Dependencies
 
-Follow [these instructions](https://github.com/matter-labs/zksync-era/blob/main/docs/guides/setup-dev.md) to set up
+Follow [these instructions](https://github.com/matter-labs/zksync-era/blob/main/docs/src/guides/setup-dev.md) to set up
 dependencies on your machine. Ignore the Environment section for now.
 
 ### Installation
@@ -48,7 +48,7 @@ Foundry is used for deploying smart contracts. Pass flags for Foundry integratio
 ### Ecosystem
 
 ZK Stack allows you to create a new ecosystem or connect to an existing one. An ecosystem includes components like the
-BridgeHub, shared bridges, and state transition managers.
+BridgeHub, shared bridges, and state transition managers. Multiple ZK chains can be registered to an ecosystem.
 [Learn more](https://docs.zksync.io/zk-stack/components/shared-bridges).
 
 #### Global Config
@@ -140,15 +140,15 @@ zkstack containers --observability
 
 #### Create
 
-The first ZK chain is generated upon ecosystem creation. Create additional chains and switch between them:
+The first ZK chain is generated upon ecosystem creation. You can also create additional chains and switch between them:
 
 ```bash
 zkstack chain create
 ```
 
 #### Init
 
-Deploy contracts and initialize Zk Chain:
+Deploy contracts and initialize ZK chain:
 
 ```bash
 zkstack chain init
@@ -184,7 +184,7 @@ Ensure you have installed:
 - [cmake](https://apt.kitware.com/)
 - [nvcc (CUDA toolkit)](https://developer.nvidia.com/cuda-downloads)
 
-Refer to the [prover docs](https://github.com/matter-labs/zksync-era/blob/main/prover/docs/02_setup.md) for more
+Refer to the [prover docs](https://github.com/matter-labs/zksync-era/blob/main/prover/docs/src/02_setup.md) for more
 information.
 
 #### Running the Prover
@@ -313,7 +313,7 @@ needed.
 
 ## Dev
 
-The subcommand `zkstack dev` offers tools for developing ZKsync.
+The subcommand `zkstack dev` offers tools for developing.
 
 ### Database