update docs

docs/qa.md

@@ -11,7 +11,7 @@ A: make sure manta is not locked to a cluster, run `manta config show` and make
 
 In this example:
 ```bash
-manta config show
+$ manta config show
 Sites: ["prealps", "alps", "alpsm"]
 Current site: alps
 HSM available: ["adula", "alps", "burst", "burst_gh", "burst_mc", "eiger", "fora", "nodes_free", "psidev", "psidev_cn", "psidev_uan", "psitds", "psitds_cn", "psitds_uan", "zinal", "zinal_cta", "zinal_moleson_tds", "zinal_tds", "zinal_zinal"]
@@ -26,7 +26,7 @@ A: The user authentication token keeps the number of clusters the user has acces
 Delete token for the site hosting the cluster the user needs access to
 
 ```bash
-manta config unset auth
+$ manta config unset auth
 Please chose the site token to delete from the list below:
 > prealps_auth
   alps_auth
@@ -40,8 +40,8 @@ Q: My sessions are failing due to an erro while running ansible playbook. How ca
 
 A: You can start an `ephemeral session`, ephemeral sessions tries to replicate the host targeting the ansible playbook started by the session. To start an ephemeral environment run the following command
 
-```
-manta apply ephemeral-environment --image-id 4bf91021-8d99-4adf-945f-46de2ff50a3d
+```bash
+$ manta apply ephemeral-environment --image-id 4bf91021-8d99-4adf-945f-46de2ff50a3d
 1eff1535-c13c-4d21-ba3f-0c852abd713b.ims.cmn.alps.cscs.ch
 ```
 
@@ -52,7 +52,7 @@ The command will return a hostname (`1eff1535-c13c-4d21-ba3f-0c852abd713b.ims.cm
 To test the ephemeral environment
 
 ```bash
-ssh [email protected]
+$ ssh [email protected]
 The authenticity of host '1eff1535-c13c-4d21-ba3f-0c852abd713b.ims.cmn.alps.cscs.ch (148.187.109.148)' can't be established.
 ED25519 key fingerprint is SHA256:/np4nEZWYztGbG/6cDI6vTsLU/9uWEXZQ9Msd/DJGNY.
 This key is not known by any other names