Rename .yaml to .yml

docker-compose and other utilities use the .yml extension.
For consistency rename all .yaml to .yml

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>

projects/miragesdk/README.md

@@ -3,6 +3,6 @@
 Instructions:
 
 ```
-../../bin/moby examples/mirage-dhcp.yaml`
-../../scripts/qemu.sh mirage-dhcp-initrd.img mirage-dhcp-bzImage "$(bin/moby --cmdline mirage-dhcp.yaml)"
+../../bin/moby examples/mirage-dhcp.yml`
+../../scripts/qemu.sh mirage-dhcp-initrd.img mirage-dhcp-bzImage "$(bin/moby --cmdline mirage-dhcp.yml)"
 ```

projects/selinux/Makefile

@@ -1,6 +1,6 @@
 MOBY=../../bin/moby
 
-selinux-initrd.img: $(MOBY) selinux.yaml
+selinux-initrd.img: $(MOBY) selinux.yml
 	$^
 
 .PHONY: qemu

projects/wireguard/roadmap.md

@@ -25,7 +25,7 @@ This project embeds the `wireguard-tools` package in the userspace image.
 This is built into the `mobylinux/init-wireguard` image that is generated by `cd init-wireguard && make`.
 
 ## Quickstart
-The quickest way to get started is to use the provided `examples/wireguard.yaml` in this directory and use the prebuilt images.
+The quickest way to get started is to use the provided `examples/wireguard.yml` in this directory and use the prebuilt images.
 
 To give WireGuard a spin, the [official quick start](https://www.wireguard.io/quickstart/) is a good way to get going.  For containers,
 WireGuard has a [network namespace integration](https://www.wireguard.io/netns/) that we could use for Moby's containers.
@@ -46,4 +46,4 @@ WireGuard has a [network namespace integration](https://www.wireguard.io/netns/)
 This is a natural fit because WireGuard associates public keys to IP addresses: a docker-compose link would simply need
 a reference to a key in addition to the existing IP address info for this to work.  However there are some open questions:
   - `containerd` does not intend to support networks from the roadmap
-  - `links` are not currently supported on swarm stack deploys at present
+  - `links` are not currently supported on swarm stack deploys at present