Update shell_command component configuration (home-assistant#7471)

klaasnicolaas · fabaff · commit 70232f9d846d · 2018-11-12T11:51:07.000+01:00
diff --git a/source/_components/shell_command.markdown b/source/_components/shell_command.markdown
@@ -25,12 +25,14 @@ shell_command:
   restart_pow: touch ~/.pow/restart.txt
 ```
 
-Configuration variables:
+{% configuration %}
+alias:
+  description: Give the shell command a name (alias) as a variable and set the command you want to execute after the colon. e.g., `alias`:`the shell command you want to execute`.
+  required: true
+  type: string
+{% endconfiguration %}
 
- - Alias for the command
- - Command itself.
-
-The commands can be dynamic, using templates to insert values for arguments. When using templates, shell_command runs in a more secure environment which doesn't allow any shell helpers like automatically expanding the home dir `~` or using pipe symbols to run multiple commands. Similarly, only content after the first space can be generated by a template. This means the command name itself cannot be generated by a template, but it must be literally provided. 
+The commands can be dynamic, using templates to insert values for arguments. When using templates, shell_command runs in a more secure environment which doesn't allow any shell helpers like automatically expanding the home dir `~` or using pipe symbols to run multiple commands. Similarly, only content after the first space can be generated by a template. This means the command name itself cannot be generated by a template, but it must be literally provided.
 
 Any service data passed into the service call to activate the shell command will be available as a variable within the template.
 
@@ -54,7 +56,7 @@ input_number:
     min: 18
     max: 32
     step: 1
-    
+
 {% raw %}
 shell_command:
   set_ac_to_slider: 'irsend SEND_ONCE DELONGHI AC_{{ states.input_number.ac_temperature.state }}_AUTO'
