docs: add troubleshooting for aci zone issue (Azure#256)

# Pull Request

## Issue

Azure#187 

## Description

This PR adds automatic zone detection and an override variable for
faulty regions.

## License

By submitting this pull request, I confirm that my contribution is made
under the terms of the projects associated license.

Author: jaredfholgate

Diff for: .github/linters/.markdown-lint.yml

@@ -22,7 +22,7 @@ MD004: false                  # ul-style - Unordered list style
 MD007:
   indent: 2                   # ul-indent - Unordered list indentation
 MD013:
-  line_length: 600            # line-length - Line length
+  line_length: 1000            # line-length - Line length
 MD026:
   punctuation: ".,;:!。，；:"  # no-trailing-punctuation - Trailing punctuation in heading
 MD029: false                  # ol-prefix - Ordered list item prefix

Diff for: .github/linters/.yaml-lint.yml

@@ -4,7 +4,7 @@ extends: default
 rules:
   # 500 chars should be enough, but don't fail if a line is longer
   line-length:
-    max: 500
+    max: 1000
     level: warning
   truthy:
     check-keys: false

Diff for: docs/wiki/Troubleshooting.md

@@ -41,3 +41,44 @@ This only affects you if you have Enterprise licensing and have chosen to use a
 <!-- markdownlint-enable no-inline-html -->
 
 [Issues]:     https://github.com/Azure/alz-terraform-accelerator/issues "Our issues log"
+
+## Error: creating Container Group
+
+If you see the following error, it is due to region (e.g. swedencentral) stating it supports availability zones, but it does not support them for Azure Container Instance. There is no way to detect this with automation, so requires a manual workaround at this time.
+
+In order to work around this issue, add the following setting to your input config file:
+
+```yaml
+# GitHub
+runner_container_zone_support: false
+
+# Azure DevOps
+agent_container_zone_support: false
+```
+
+```text
+╷
+│ Error: creating Container Group (Subscription: "0d754f66-65b4-4f64-97f5-221f0174ad48"
+│ Resource Group Name: "rg-alz-r14c67r424-agents-swedencentral-001"
+│ Container Group Name: "aci-alz-r14c67r424-swedencentral-002"): polling after ContainerGroupsCreateOrUpdate: polling failed: the Azure API returned the following error:
+│
+│ Status: "Failed"
+│ Code: "Failed"
+│ Message: "The requested resource is not available in the location 'swedencentral' at this moment. Please retry with a different resource request or in another location. Resource requested: '2' CPU '4' GB memory 'Linux' OS"
+│ Activity Id: ""
+│
+│ ---
+│
+│ API Response:
+│
+│ ----[start]----
+│ {"id":"/subscriptions/**754f66-****-4f64-****-221f0174ad4**/resourceGroups/rg-alz-r14c67r424-agents-swedencentral-001/providers/Microsoft.ContainerInstance/containerGroups/aci-alz-r14c67r424-swedencentral-002","status":"Failed","startTime":"2024-11-29T11:15:39.9940663Z","properties":{"events":[{"count":1,"firstTimestamp":"2024-11-29T11:15:41.1163736Z","lastTimestamp":"2024-11-29T11:15:41.1163736Z","name":"InsufficientCapacity.","message":"The requested resource is not available in the location 'swedencentral' at this moment. Please retry with a different resource request or in another location. Resource requested: '2' CPU '4' GB memory 'Linux' OS","type":"Warning"}]},"error":{"message":"The requested resource is not available in the location 'swedencentral' at this moment. Please retry with a different resource request or in another location. Resource requested: '2' CPU '4' GB memory 'Linux' OS"}}
+│ -----[end]-----
+│
+│
+│   with module.azure.azurerm_container_group.alz["agent_02"],
+│   on ../../modules/azure/container_instances.tf line 1, in resource "azurerm_container_group" "alz":
+│    1: resource "azurerm_container_group" "alz" {
+│
+╵
+```