Add explicit returns for interactive doctests

Author: vivekjoshy

README.md

@@ -75,6 +75,7 @@ Ties should have either equivalent rank or score.
 ```python
 >>> a1 = b1 = c1 = d1 = Rating()
 >>> result = [[a2], [b2], [c2], [d2]] = rate([[a1], [b1], [c1], [d1]], score=[37, 19, 37, 42])
+>>> result
 [[[24.68943500312503, 8.179213704945203]], [[22.826045021875203, 8.179213704945203]], [[24.68943500312503, 8.179213704945203]], [[27.795084971874736, 8.263160757613477]]]
 ```
 

docs/manual.rst

@@ -83,6 +83,7 @@ Ties should have either equivalent rank or score.
 
    >>> a1 = b1 = c1 = d1 = Rating()
    >>> result = [[a2], [b2], [c2], [d2]] = rate([[a1], [b1], [c1], [d1]], score=[37, 19, 37, 42])
+   >>> result
    [[[24.68943500312503, 8.179213704945203]], [[22.826045021875203, 8.179213704945203]], [[24.68943500312503, 8.179213704945203]], [[27.795084971874736, 8.263160757613477]]]
 
 Choosing Models