Fixed some links & typos

Author: meanmango

CONTRIBUTING.md

@@ -70,7 +70,7 @@ how to edit and expand the build process.
 - [Kubernetes Controller Best Practices](https://github.com/kubernetes/community/blob/master/contributors/devel/controllers.md) -
   Set of best practices written for writing Controllers inside Kubernetes. Also a great list for everywhere else too.
 - [Writing Kube Controllers for Everyone - Maciej Szulik, Red Hat](https://www.youtube.com/watch?v=AUNPLQVxvmw) -
-  A great into video into coding for Controllers, and explaining Informers and Listers.
+  A great intro video into coding for Controllers, and explaining Informers and Listers.
 - [@markmandel](https://github.com/markmandel) regularly streams his development of Agones on [Twitch](https://www.twitch.tv/markmandel).
   You can find the full archive on [YouTube](https://www.youtube.com/playlist?list=PLqqp1QEhKwa5aNivDIE4SS21ehE9Zt0VZ)
 

build/README.md

@@ -122,7 +122,7 @@ Congratulations! You have now successfully tested and built Agones!
 
 ### Running a Test Google Kubernetes Engine Cluster
 
-This will setup a test GKE cluster on Google Cloud, with firewall rules set each of the nodes for ports 7000-8000
+This will setup a test GKE cluster on Google Cloud, with firewall rules set for each of the nodes for ports 7000-8000
 to be open to UDP traffic.
 
 First step is to create a Google Cloud Project at https://console.cloud.google.com or reuse an existing one.

docs/access_api.md

@@ -231,4 +231,4 @@ $ curl http://localhost:8001/apis/stable.agones.dev/v1alpha1/namespaces/default/
 The [Verb Resources](https://github.com/kubernetes/community/blob/master/contributors/devel/api-conventions.md#verbs-on-resources)
 section provide the more details on the API conventions that are used in the Kubernetes API.
 
-It may also be useful to look at the [API patterns for standard Kubernetes resources](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.9/#-strong-write-operations-strong--54).
+It may also be useful to look at the [API patterns for standard Kubernetes resources]()https://v1-10.docs.kubernetes.io/docs/reference/generated/kubernetes-api/v1.10/#-strong-write-operations-strong--54.