Start kurtosis engine instruction (#1069)

* Start kurtosis engine instruction

Author: mfornet

docs/tools/kurtosis-localnet.md

@@ -24,6 +24,7 @@ This Kurtosis NEAR Module contains the following components:
 - [Yarn](https://classic.yarnpkg.com/lang/en/docs/install)
 - [NEAR-CLI](/docs/tools/near-cli#setup)
 - [Kurtosis CLI](https://docs.kurtosistech.com/installation.html)
+  - Start Kurtosis engine after installation using: `kurtosis engine start`
 
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