Update recommended Terraform provider versions

* Sync Terraform provider plugin versions to those used
internally
* Update mkdocs-material from v5.5.1 to v5.5.6
* Fix minor details in docs

CHANGES.md

@@ -8,7 +8,7 @@ Notable changes between versions.
 
 * Kubernetes [v1.18.8](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.18.md#v1188)
 * Migrate from Terraform v0.12.x to v0.13.x ([#804](https://github.com/poseidon/typhoon/pull/804)) (**action required**)
-  * Recommend Terraform v0.13.x ([migration guide](https://github.com/poseidon/typhoon/blob/5e70d7e2c8c71c37d9a0896a0945188f009011f9/docs/topics/maintenance.md#terraform-versions))
+  * Recommend Terraform v0.13.x ([migration guide](https://typhoon.psdn.io/topics/maintenance/#terraform-versions))
   * Support automatic install of poseidon's provider plugins ([poseidon/ct](https://registry.terraform.io/providers/poseidon/ct/latest), [poseidon/matchbox](https://registry.terraform.io/providers/poseidon/matchbox/latest))
   * Require Terraform v0.12.26+ (migration compatibility)
   * Require `terraform-provider-ct` v0.6.1

docs/fedora-coreos/aws.md

@@ -55,7 +55,7 @@ terraform {
     }
     aws = {
       source = "hashicorp/aws"
-      version = "3.1.0"
+      version = "3.2.0"
     }
   }
 }

docs/fedora-coreos/azure.md

@@ -52,7 +52,7 @@ terraform {
     }
     azurerm = {
       source = "hashicorp/azurerm"
-      version = "2.22.0"
+      version = "2.23.0"
     }
   }
 }

docs/fedora-coreos/google-cloud.md

@@ -56,7 +56,7 @@ terraform {
     }
     google = {
       source = "hashicorp/google"
-      version = "3.33.0"
+      version = "3.34.0"
     }
   }
 }

docs/flatcar-linux/aws.md

@@ -55,7 +55,7 @@ terraform {
     }
     aws = {
       source = "hashicorp/aws"
-      version = "3.1.0"
+      version = "3.2.0"
     }
   }
 }

docs/flatcar-linux/azure.md

@@ -52,7 +52,7 @@ terraform {
     }
     azurerm = {
       source = "hashicorp/azurerm"
-      version = "2.22.0"
+      version = "2.23.0"
     }
   }
 }

docs/flatcar-linux/google-cloud.md

@@ -56,7 +56,7 @@ terraform {
     }
     google = {
       source = "hashicorp/google"
-      version = "3.33.0"
+      version = "3.34.0"
     }
   }
 }

docs/topics/maintenance.md

@@ -154,8 +154,7 @@ $ tree ~/.terraform.d/
 
 Update the version of the `ct` plugin in each Terraform working directory. Typhoon clusters managed in the working directory **must** be v1.12.2 or higher.
 
-```
-# providers.tf
+```tf
 provider "ct" {
   version = "0.6.1"
 }
@@ -211,7 +210,7 @@ Typhoon modules have been updated for v0.13.x, but retain compatibility with v0.
 
 | Typhoon Release   | Terraform version   |
 |-------------------|---------------------|
-| v1.18.7 - ?       | v0.12.26+, v0.13.x  |
+| v1.18.8 - ?       | v0.12.26+, v0.13.x  |
 | v1.15.0 - v1.18.8 | v0.12.x             |
 | v1.10.3 - v1.15.0 | v0.11.x             |
 | v1.9.2 - v1.10.2  | v0.10.4+ or v0.11.x |
@@ -228,7 +227,7 @@ An existing Terraform workspace may already manage earlier Typhoon clusters crea
 
 First, upgrade `terraform-provider-ct` to v0.6.1 following the [guide](#upgrade-terraform-provider-ct) above. As usual, read about how `apply` affects existing cluster nodes when `ct` is upgraded. But `terraform-provider-ct` v0.6.1 is compatible with both Terraform v0.12 and v0.13, so do this first.
 
-```
+```tf
 provider "ct" {
   version = "0.6.1"
 }

requirements.txt

@@ -1,4 +1,4 @@
 mkdocs==1.1.2
-mkdocs-material==5.5.1
+mkdocs-material==5.5.6
 pygments==2.6.1
 pymdown-extensions==7.1.0