chore: add MD linter (#18)

.markdownlint.yml

@@ -0,0 +1,2 @@
+MD013: false # long lines
+MD034: false # bare urls

08-service/README.md

@@ -94,10 +94,10 @@ Your service is now accessible internally, try this in your `bash` container:
 
 ```bash
 root@bash:/# nslookup simple-service
-Server:		10.96.0.10
-Address:	10.96.0.10#53
+Server:   10.96.0.10
+Address:  10.96.0.10#53
 
-Name:	simple-service.default.svc.cluster.local
+Name: simple-service.default.svc.cluster.local
 Address: 10.96.31.244
 ```
 
@@ -197,10 +197,10 @@ You have seen a lot different `kind` of k8s, let's take a step back and see how
 ## Exercises
 
 1. Deploy an nginx and expose it internally
-2. Read [this](https://kubernetes.io/docs/concepts/services-networking/ingress/#simple-fanout) and modify the ingress to have:
-  * `/simple` that goes to the `simple-service`
-  * `/nginx` that goes to your nginx deployment
-3. Change the `selector` in your `simple-service` look at what is happening
+1. Read [this](https://kubernetes.io/docs/concepts/services-networking/ingress/#simple-fanout) and modify the ingress to have:
+    * `/simple` that goes to the `simple-service`
+    * `/nginx` that goes to your nginx deployment
+1. Change the `selector` in your `simple-service` look at what is happening
 
 ## Clean up
 

15-hpa-vpa/README.md

@@ -23,4 +23,4 @@ targetCPUUtilizationPercentage: 80
   * `maxReplicas`: the maximum number of pods running
   * `minReplicas`: the minimum number of pods running
   * `scaleTargetRef`: what this HPA targets, here a `Deployment` named `simple-deployment`
-* `targetCPUUtilizationPercentage`: the percentage of CPU utilization to cross to activate the HPA
+* `targetCPUUtilizationPercentage`: the percentage of CPU utilization to cross to activate the HPA

README.md

@@ -113,7 +113,7 @@ This is not a hands on on how to install/manage/deploy a k8s cluster.
 This is neither a hands on to understand how k8s is working internally.
 If this topic interests you, see [Kubernetes the hard way](https://github.com/kelseyhightower/kubernetes-the-hard-way).
 
-## What is k8s? What is it used for?
+## What is k8s? What is it used for
 
 k8s is an open source system for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications.