-Corrected the code block markup.

README.rst

@@ -7,7 +7,7 @@ and hosts.
 
 Installation
 ------------
-::
+.. code:: shell
 
     git clone https://www.shore.co.il/cgit/ssh-ca
     cd ssh-ca
@@ -16,23 +16,33 @@ Installation
 Usage
 -----
 
-To start a new certificate authority::
+To start a new certificate authority
+
+.. code:: shell
 
     ssh-ca init
 
-To sign a user's public key::
+To sign a user's public key
+
+.. code:: shell
 
     ssh-ca signuser username
 
-To sign a hosts's public key::
+To sign a hosts's public key
+
+.. code:: shell
 
     ssh-ca signhost hostname
 
-To generate a new keypair for a host with a signed public key::
+To generate a new keypair for a host with a signed public key
+
+.. code:: shell
 
     ssh-ca newhost hostname
 
-To generate a new keypair for a user with a signed public key::
+To generate a new keypair for a user with a signed public key
+
+.. code:: shell
 
     ssh-ca newuser username
 
@@ -40,13 +50,13 @@ Authenticating hosts
 --------------------
 
 #. Sign the server's public key or generate a new pair and copy the files over.
-#. Add the following line to `/etc/ssh/sshd_config`::
+#. Add the following line to :code:`/etc/ssh/sshd_config`::
 
     HostCertificate /path/to/the/signed/public/key
 
 #. Add a line to your `known_hosts` file to authorize signed public keys to a
    specific top level domain. For example if your domain is example.com and the
-contents of `CA.pub` is::
+   contents of :code:`CA.pub` is::
 
        ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC2fAkeidfnPn712B4uW3XhKyFt9FcJtVwSPKDSCykULg3X5gVV/Xa1yb4ameY3ihXOqQOlG3YpYnOQ8KdM67WtnERVbTJIfieRjGzoURz9NquLFXSKsuQrXMWRNHqXAHw7VirPvKL4cSc4l00Az1HDnHhMIclPY8G+8SkRIRsTwwwa5QjGF2wuhC6j5UHJSaF7qLFw9FSaCsEJTkQxtCD4+Rd/dxv3kVWSkm5DbNG0z3QHyISW7XDvyXP+1ccSb5+IWC0yQCT4OJNFUMDb+SdD7AzDHfI9Z5zTp56uGV23lywWhSvv20UPA0SyXJNGPOw7uJ1ak8q4SBh60PtOENQf ssh-ca
 
@@ -55,7 +65,8 @@ Then the line will be::
     @cert-authority *.example.com ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC2fAkeidfnPn712B4uW3XhKyFt9FcJtVwSPKDSCykULg3X5gVV/Xa1yb4ameY3ihXOqQOlG3YpYnOQ8KdM67WtnERVbTJIfieRjGzoURz9NquLFXSKsuQrXMWRNHqXAHw7VirPvKL4cSc4l00Az1HDnHhMIclPY8G+8SkRIRsTwwwa5QjGF2wuhC6j5UHJSaF7qLFw9FSaCsEJTkQxtCD4+Rd/dxv3kVWSkm5DbNG0z3QHyISW7XDvyXP+1ccSb5+IWC0yQCT4OJNFUMDb+SdD7AzDHfI9Z5zTp56uGV23lywWhSvv20UPA0SyXJNGPOw7uJ1ak8q4SBh60PtOENQf ssh-ca
 
 #. You can also add it system wide by adding the above line to
-`/etc/ssh/ssh_known_hosts` and the following line to your `ssh_config` file::
+:code:`/etc/ssh/ssh_known_hosts` and the following line to your
+:code:`ssh_config` file::
 
     GlobalKnownHostsFile /etc/ssh/ssh_known_hosts
 
@@ -67,21 +78,22 @@ Authenticating users
 --------------------
 
 #. Sign the user's public key or generate a new pair and copy them over.
-#. Copy CA.pub over to the host.
-#. Add the following line to `/etc/ssh/sshd_config`::
+#. Copy :code:`CA.pub` over to the host.
+#. Add the following line to :code:`/etc/ssh/sshd_config`::
 
     TrustedUserCAKeys /path/to/CA.pub
 
 Development
 -----------
 
-To ease development ``make clean`` and ``make test`` are available. It's
-recommended to add ``make test`` to your git pre-commit hook.
+To ease development :code:`make clean` and :code:`make test` are available.
+It's recommended to add :code:`make test` to your git pre-commit hook.
 
 License
 -------
 
-This software is licnesed under the MIT licese (see the ``LICENSE.txt`` file).
+This software is licnesed under the MIT licese (see the :code:`LICENSE.txt`
+file).
 
 Author
 ------