docs/README: fix broken links

Use absolute paths from the toplevel of the git repo instead of
relative paths because the README exists in the docs directory but
is symlinked from the toplevel of the repo.

docs/README.md

@@ -22,16 +22,16 @@ One way to view the MCO is to treat the operating system itself as "just another
 Kubernetes component" that you can inspect and manage with `oc`.
 
 The MCO uses [CoreOS Ignition](https://github.com/coreos/ignition) as a configuration
-format.  Operating system updates use [rpm-ostree](http://github.com/projectatomic/rpm-ostree), with ostree updates encapsulated inside a container image.  More information in [OSUpgrades.md](docs/OSUpgrades.md).
+format.  Operating system updates use [rpm-ostree](http://github.com/projectatomic/rpm-ostree), with ostree updates encapsulated inside a container image.  More information in [OSUpgrades.md](/docs/OSUpgrades.md).
 
 # Sub-components and design
 
 This one git repository generates 4 components in a cluster; the `machine-config-operator`
 pod manages the remaining 3 sub-components.  Here are links to design docs:
 
- - [machine-config-server](docs/MachineConfigServer.md)
- - [machine-config-controller](docs/MachineConfigController.md)
- - [machine-config-daemon](docs/MachineConfigDaemon.md)
+ - [machine-config-server](/docs/MachineConfigServer.md)
+ - [machine-config-controller](/docs/MachineConfigController.md)
+ - [machine-config-daemon](/docs/MachineConfigDaemon.md)
 
 # Interacting with the MCO
 
@@ -136,21 +136,21 @@ a single MC apply to multiple labels, inline file encoding, etc.
 # What to look at after creating a MachineConfig
 
 Once you create a MachineConfig fragment like the above, the controller will generate a new "rendered" version that will be used as a target.
-For more information, see [MachineConfiguration](docs/MachineConfiguration.md).
+For more information, see [MachineConfiguration](/docs/MachineConfiguration.md).
 
 In particular, you should look at `oc describe machineconfigpool` and `oc describe clusteroperator/machine-config` as noted above.
 
 # More information about OS updates
 
-The model implemented by the MCO is that the cluster controls the operating system.  OS updates are just another entry in the release image.  For more information, see [OSUpgrades.md](docs/OSUpgrades.md).
+The model implemented by the MCO is that the cluster controls the operating system.  OS updates are just another entry in the release image.  For more information, see [OSUpgrades.md](/docs/OSUpgrades.md).
 
 # Developing the MCO
 
-See [HACKING.md](docs/HACKING.md).
+See [HACKING.md](/docs/HACKING.md).
 
 # Frequently Asked Questions
 
-See [FAQ.md](docs/FAQ.md).
+See [FAQ.md](/docs/FAQ.md).
 
 # Security Response