docs fixed a bit

docs/coding/predicates.rst

@@ -18,17 +18,11 @@ Satella lets you express lambdas in a Pythonic way, eg:
         assert(p(2) and not p(1))
 
 
-This behaviour extends to operators, item procurement and attr procurement. The only exception is the length,
-which due to Python limitations (namely __len__ being allowed to return an int only) is called
-via it's method .length(), eg:
-
-
-    ::
-
-        p = x.length() == 2
-
-        assert(p([1, 2]) and not p([3])
+This behaviour extends to operators, item procurement and attr procurement.
+The only exceptions are operator subject to Python limitations (ie.
+__len__ being allowed to return an int only for example) is called.
 
+These are mentioned in the docs below.
 
 You can also piece together multiple predicates.
 Because of Python limitations please use & and | operators in place of and and or.

satella/coding/predicates.py

@@ -116,7 +116,7 @@ class Predicate:
         """
         Check if given value has the correct schema.
         The schema is the same as in
-        :py:meth:`satella.coding.structures.DictObject.is_valid_schema`
+        :py:meth:`~satella.coding.structures.DictObject.is_valid_schema`
         """
         def is_schema_correct(v):
             return DictObject(self.operation(v)).is_valid_schema(schema, **kwargs)