docs/src/getting_started/introduction: use boolOption instead of enableOption

Resolves #42

Author: yunfachi

docs/src/getting_started/introduction.md

@@ -62,7 +62,7 @@ delib.module {
   name = "example";
 
   options.example = with delib; {
-    enable = enableOption true;
+    enable = boolOption true;
     hostnames = listOfOption str [];
   };
 

docs/src/ru/getting_started/introduction.md

@@ -62,7 +62,7 @@ delib.module {
   name = "example";
 
   options.example = with delib; {
-    enable = enableOption true;
+    enable = boolOption true;
     hostnames = listOfOption str [];
   };