Trac #17263: remove empty lines between doctests

and other minimal changes

src/sage/combinat/fsm_fourier.pyx

@@ -409,24 +409,21 @@ def _reduce_resolution_(data, x_min, x_max, resolution):
     such that `y_\mathrm{min}\le y\le y_\mathrm{max}` and
     `0\le x-x'< (x_\mathrm{max}-x_\mathrm{min})/\mathit{resolution}`.
 
-    A list plot of the original list thus corresponds to plot of the vertical line
-    segments defined by the output.
+    A list plot of the original list thus corresponds to plot of the
+    vertical line segments defined by the output.
 
-    EXAMPLE::
+    EXAMPLES::
 
         sage: from sage.combinat.fsm_fourier import _reduce_resolution_ # optional - arb
         sage: _reduce_resolution_(((i/10, i) for i in range(10)), # optional - arb
         ....:                    0, 1, 2)
         [(0.0, 0, 4), (0.5, 5, 9)]
-
         sage: _reduce_resolution_(((1 - i/10, i) for i in range(1, 11)), # optional - arb
         ....:                    0, 1, 2)
         [(0.0, 6, 10), (0.5, 1, 5)]
-
         sage: _reduce_resolution_(((0, 2), (0.2, 1), (0.4, 0), # optional - arb
         ....:                      (0.6, 1.5), (0.8, 3)), 0, 1, 2)
         [(0.0, 0, 2), (0.5, 1.50000000000000, 3)]
-
         sage: _reduce_resolution_([(0, 10)],  # optional - arb
         ....:                    0, 1, 2)
         [(0.0, 10, 10)]