Fix whitespaces

docs/user-guide/cluster.md

@@ -18,4 +18,4 @@ Once your Træfik configuration is uploaded on your KV store, you can start each
 A Træfik cluster is based on a manager/worker model.
 When starting, Træfik will elect a manager.
 If this instance fails, another manager will be automatically elected.
- 
+

docs/user-guide/kv-config.md

@@ -36,7 +36,7 @@ consul:
     - "8301"
     - "8301/udp"
     - "8302"
-    - "8302/udp"  
+    - "8302/udp"
 
 whoami1:
   image: emilevauge/whoami

docs/user-guide/swarm-mode.md

@@ -303,11 +303,11 @@ Wait, I thought we added the sticky flag to `whoami1`?  Traefik relies on a cook
 First you need to add `whoami1.traefik` to your hosts file:
 
 ```shell
-if [ -n "$(grep whoami1.traefik /etc/hosts)" ];  
-then 
-    echo "whoami1.traefik already exists (make sure the ip is current)"; 
-else 
-    sudo -- sh -c -e "echo '$(docker-machine ip manager)\twhoami1.traefik' >> /etc/hosts"; 
+if [ -n "$(grep whoami1.traefik /etc/hosts)" ];
+then
+    echo "whoami1.traefik already exists (make sure the ip is current)";
+else
+    sudo -- sh -c -e "echo '$(docker-machine ip manager)\twhoami1.traefik' >> /etc/hosts";
 fi
 ```