Allow links to be specified with only the name if this matches the alias

Signed-off-by: Antonio Murdaca <me@runcom.ninja>

docs/sources/reference/commandline/cli.md

@@ -2138,6 +2138,12 @@ Guide.
 The `--link` flag will link the container named `/redis` into the newly
 created container with the alias `redis`. The new container can access the
 network and environment of the `redis` container via environment variables.
+The `--link` flag will also just accept the form `<name or id>` in which case
+the alias will match the name. For instance, you could have written the previous
+example as:
+
+    $ docker run --link redis --name console ubuntu bash
+
 The `--name` flag will assign the name `console` to the newly created
 container.
 

docs/sources/reference/run.md

@@ -942,7 +942,7 @@ or override the Dockerfile's exposed defaults:
                    Both hostPort and containerPort can be specified as a range of ports. 
                    When specifying ranges for both, the number of container ports in the range must match the number of host ports in the range. (e.g., `-p 1234-1236:1234-1236/tcp`)
                    (use 'docker port' to see the actual mapping)
-    --link=""  : Add link to another container (<name or id>:alias)
+    --link=""  : Add link to another container (<name or id>:alias or <name or id>)
 
 As mentioned previously, `EXPOSE` (and `--expose`) makes ports available
 **in** a container for incoming connections. The port number on the