[Bug-gsl] more small doc knits

[Britton Kerin]

In the description of function gsl_matrix_view_array_with_tda, sentence 1, 
it looks like the words 'corresponding' and 'the' have been transposed.

In the example for chapter 36 (Non-linear least-squares fitting, it seems 
that the print_state routine should have a return statement.

In the example, the call gsl_matrix_fprintf (stdout, covar, "%g"); 
appears, but its output is not shown.  Probably either the call should be 
removed from the example, or the wording preceeding the program output 
(which currently reads "Here are the results of running the program,") 
should be changed.  Also, in the current working, a colon would be more 
appropriate than a comma.

Britton