Create guide for distributed tests (#1251)

Create guide for creating and running distributed tests

Signed-off-by: Paul Balogh <[email protected]>

Author: javaducky

.vale/Vocab/docs/accept.txt

@@ -93,6 +93,7 @@ j[qQ]uery
 jq
 loki
 Kibana
+Kustomize
 Lua
 maxfiles
 Netdata

src/data/markdown/translated-guides/en/02 Using k6/11 Environment variables.md

@@ -4,7 +4,7 @@ excerpt: 'You can access any environment variables from your k6 script code and
 ---
 
 Often, scripts need only minor tweaks to be reusable in different contexts.
-Rather than creating several separate scripts for these different contexts or environments, you can use environment variables to make parts of your script tweakable.
+Rather than creating several separate scripts for these different contexts or environments, you can use [environment variables](/misc/glossary/#environment-variables) to make parts of your script tweakable.
 
 You can use environment variables for two main purposes: