Sets documentation theme color attribute (#669)

* Sets documentation theme color attribute

"It will be shown as the hover color for links etc"
Reference: https://sphinx-typlog-theme.readthedocs.io/en/latest/options.html#color

* Fixes `interface.rst`

The `Laws` sub-section of `Bindable` section was separated of it

Author: thepabloaguilar

docs/conf.py

@@ -165,6 +165,7 @@ def _get_project_meta():
     ),
     'github_user': 'dry-python',
     'github_repo': 'returns',
+    'color': '#E8371A',
 }
 
 # Add any paths that contain custom static files (such as style sheets) here,

docs/pages/interfaces.rst

@@ -239,21 +239,6 @@ us to create our custom bindable.
   >>> bag_of_peanuts: Bag[Peanuts] = Bag(Peanuts(10))
   >>> assert bag_of_peanuts.bind(get_half) == Bag(Peanuts(5))
 
-
-Applicative
------------
-
-.. currentmodule:: returns.interfaces.applicative
-
-Laws
-~~~~
-
-
-Container
----------
-
-.. currentmodule:: returns.interfaces.container
-
 Laws
 ~~~~
 
@@ -301,6 +286,21 @@ respect three new laws.
   ... )
 
 
+Applicative
+-----------
+
+.. currentmodule:: returns.interfaces.applicative
+
+Laws
+~~~~
+
+
+Container
+---------
+
+.. currentmodule:: returns.interfaces.container
+
+
 More!
 -----