docs: add rougail path in the lipogram doc sample

docs/library.rst

@@ -31,16 +31,16 @@ Here is a first :file:`dict/00-base.yml` dictionary:
 
 Then, let's create the :term:`Tiramisu` objects via the following script:
 
-.. code-block:: python 
+.. code-block:: python
     :caption: the `script.py` file content
-   
+
     from rougail import Rougail, RougailConfig
 
     RougailConfig['dictionaries_dir'] = ['dict']
     rougail = Rougail()
     config = rougail.get_config()
     print(config.value.get())
- 
+
 Let's execute `script.py`:
 
 .. code-block:: bash
@@ -76,9 +76,9 @@ Then let's create an extra :term:`dictionary` :file:`extras/00-base.yml`:
 
 Then, let's create the :term:`Tiramisu` objects via the following :file:`script.py` script:
 
-.. code-block:: python 
-    :caption: the :file:`script.py` file content 
-    
+.. code-block:: python
+    :caption: the :file:`script.py` file content
+
     from rougail import Rougail, RougailConfig
 
     RougailConfig['dictionaries_dir'] = ['dict']
@@ -105,21 +105,21 @@ We create the complementary :term:`dictionary` named :file:`dict/01-function.yml
     version: '1.0'
     my_variable_jinja:
       type: "string"
-      default:    
+      default:
         type: jinja
         jinja: "{{ return_no() }}"
 
 Then let's define the :func:`return_no` function in :file:`functions.py`:
 
-.. code-block:: python 
+.. code-block:: python
    :caption: the :file:`functions.py` content
-   
+
    def return_no():
        return 'no'
 
 Then, let's create the :term:`Tiramisu` objects via the following script:
 
-.. code-block:: python 
+.. code-block:: python
     :caption: the `script.py` file content
 
     from rougail import Rougail, RougailConfig
@@ -152,15 +152,15 @@ It's possible to create your own type.
 
 Here an example to a lipogram option (in a string, we cannot use "e" character):
 
-.. code-block:: python 
+.. code-block:: python
     :caption: the `lipogram.py` file content
 
     from tiramisu import StrOption
     class LipogramOption(StrOption):
         __slots__ = tuple()
         _type = 'lipogram'
-    
-        def validate(self, 
+
+        def validate(self,
                      value):
             super().validate(value)
             # verify that there is any 'e' in the sentense
@@ -169,7 +169,7 @@ Here an example to a lipogram option (in a string, we cannot use "e" character):
 
 To add the new lipogram type in Rougail:
 
-.. code-block:: python 
+.. code-block:: python
     >>> from rougail import Rougail, RougailConfig
     >>> RougailConfig['dictionaries_dir'] = ['dict']
     >>> RougailConfig['custom_types']['lipogram'] = LipogramOption
@@ -183,10 +183,10 @@ Here is a :file:`dict/00-base.yml` dictionary:
     var:
       type: lipogram
 
-.. code-block:: python 
+.. code-block:: python
     >>> rougail = Rougail()
     >>> config = rougail.get_config()
-    >>> config.option('var').value.set('blah')
-    >>> config.option('var').value.set('I just want to add a quality string that has no bad characters')
+    >>> config.option('rougail.var').value.set('blah')
+    >>> config.option('rougail.var').value.set('I just want to add a quality string that has no bad characters')
     [...]
     tiramisu.error.ValueOptionError: "I just want to add a quality string that has no bad characters" is an invalid lipogram for "var", Perec wrote a book without any "e", you could not do it in a simple sentence?