trivial typo (master e59b0fadcd1e2ef689f299dbad49f624db1b5469)

[balducci]

hi there seems to be a trivial typo in asymptote.texi which crashes make install for me:

diff -c doc/asymptote.texi.FIX_ASSY doc/asymptote.texi
*** doc/asymptote.texi.FIX_ASSY Fri Aug  6 14:18:40 2021
--- doc/asymptote.texi  Fri Aug  6 14:18:40 2021
***************
*** 7501,7507 ****
  can be used to construct the graph of the parametric function @code{f}
  on @code{[a,b]} with the control points of the @code{n} Bezier
  segments determined by the specified derivative @code{fprime}:
! @verbatiminclude graphwithderiv.assy
  @sp 1
  @center @image{./graphwithderiv}

--- 7501,7507 ----
  can be used to construct the graph of the parametric function @code{f}
  on @code{[a,b]} with the control points of the @code{n} Bezier
  segments determined by the specified derivative @code{fprime}:
! @verbatiminclude graphwithderiv.asy
  @sp 1
  @center @image{./graphwithderiv}

thanks for your valuable work ciao -gabriele

[johncbowman]

Fixed.