Layout changes.

docs/source/user_libs_opt_taguchi.rst

@@ -59,9 +59,6 @@ Package overview
 * `optimisation_taguchi_plot.py` is a module for plotting the results, such as parameter values and convergence history, from an optimisation process when it has completed.
 
 
-How to use the package
-======================
-
 Parameters to optimise
 ----------------------
 
@@ -77,5 +74,8 @@ A fitness function is required to set a goal against which to compare results fr
 * `args` a dictionary which can contain any number of additional arguments for the function, e.g. names (IDs) of outputs (rxs) from input file
 
 
+How to use the package
+======================
+
 Example
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