Fix double single dash arg issues in docs

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)

docs/sources/articles/runmetrics.rst

@@ -63,7 +63,7 @@ For Docker containers using cgroups, the container name will be the
 full ID or long ID of the container. If a container shows up as
 ae836c95b4c3 in ``docker ps``, its long ID might be something like
 ``ae836c95b4c3c9e9179e0e91015512da89fdec91612f63cebae57df9a5444c79``. You
-can look it up with ``docker inspect`` or ``docker ps -notrunc``.
+can look it up with ``docker inspect`` or ``docker ps --no-trunc``.
 
 Putting everything together to look at the memory metrics for a Docker
 container, take a look at ``/sys/fs/cgroup/memory/lxc/<longid>/``.

docs/sources/examples/postgresql_service.rst

@@ -37,7 +37,7 @@ And run the PostgreSQL server container (in the foreground):
 
 .. code-block:: bash
 
-    $ sudo docker run --rm -P -name pg_test eg_postgresql
+    $ sudo docker run --rm -P --name pg_test eg_postgresql
 
 There are  2 ways to connect to the PostgreSQL server. We can use 
 :ref:`working_with_links_names`, or we can access it from our host (or the network).

docs/sources/use/working_with_volumes.rst

@@ -129,7 +129,7 @@ because they are external to images.
 Instead you can use ``--volumes-from`` to start a new container that can access the
 data-container's volume. For example::
 
-    $ sudo docker run -rm --volumes-from DATA -v $(pwd):/backup busybox tar cvf /backup/backup.tar /data
+    $ sudo docker run --rm --volumes-from DATA -v $(pwd):/backup busybox tar cvf /backup/backup.tar /data
 
 * ``--rm`` - remove the container when it exits
 * ``--volumes-from DATA`` - attach to the volumes shared by the ``DATA`` container
@@ -140,7 +140,7 @@ data-container's volume. For example::
 Then to restore to the same container, or another that you've made elsewhere::
 
     # create a new data container
-    $ sudo docker run -v /data -name DATA2 busybox true
+    $ sudo docker run -v /data --name DATA2 busybox true
     # untar the backup files into the new container's data volume
     $ sudo docker run --rm --volumes-from DATA2 -v $(pwd):/backup busybox tar xvf /backup/backup.tar
     data/