doc: improve xk6 building README

stress-test/README.md

@@ -9,16 +9,21 @@
    ```bash
       cartridge replicasets setup --file replicasets.yml --bootstrap-vshard
    ```
-2. Generate test data and define the number of records:
+1. Generate test data and define the number of records:
     ```bash
     ./data_generator.lua 1000
     ```
-3. Build [k6](https://k6.io/docs/getting-started/running-k6/) with the [dtm module](https://gitlab.com/picodata/arenadata/asbest/-/tree/master/xk6-plugin-dtm)
+1. Clone `asbest` repository to an arbitrary local directory
    ```
-   xk6 build --with xk6-plugin-dtm=gitlab.com/picodata/arenadata/asbest/-/tree/master/xk6-plugin-dtm --with github.com/hackfeed/xk6-tarantool
+   git clone git@gitlab.com:picodata/arenadata/asbest.git
+   cd asbest
+   ```
+1. Build [k6](https://k6.io/docs/getting-started/running-k6/) with the [dtm module](https://gitlab.com/picodata/arenadata/asbest/-/tree/master/xk6-plugin-dtm)
+   ```
+   xk6 build v0.32.0 --with xk6-plugin-dtm="$(pwd)/xk6-plugin-dtm" --with github.com/hackfeed/xk6-tarantool
    ```
 
-4. Run the [k6](https://k6.io/docs/getting-started/running-k6/) script 
+1. Run the [k6](https://k6.io/docs/getting-started/running-k6/) script 
     ```bash
-   k6 -u 10 -d 1m k6.js
+   ./k6 run -u 10 -d 1m k6.js
    ```