fix(snap): fix outdated description in snapcraft.yaml

The change in snapd to support the `openshell` snap connecting to a
non-snap Docker daemon will ship in snapd 2.77, not 2.76.

Also, all the `openshell` snap interfaces are now auto-connected, so
there is no need for manual connection anymore. Remove these from the
description.

Signed-off-by: Oliver Calder <oliver.calder@canonical.com>

Author: olivercalder

snapcraft.yaml

@@ -20,13 +20,10 @@ description: |
 
          sudo snap install docker
 
-       Support for system-installed Docker is coming in snapd 2.76.
+       Support for system-installed Docker is coming in snapd 2.77.
 
-    2. Connect the required interfaces and start the gateway:
+    2. Start the gateway:
 
-         sudo snap connect openshell:docker docker:docker-daemon
-         sudo snap connect openshell:log-observe
-         sudo snap connect openshell:system-observe
          sudo snap start openshell.gateway
 
     3. Verify the gateway and register it locally: