Update contents/cooley_tukey/code/clisp/fft.lisp

Co-authored-by: Trashtalk217 <trashtalk217@gmail.com>

Author: 0xJonas

contents/cooley_tukey/code/clisp/fft.lisp

@@ -17,7 +17,7 @@
          ;; Calculate coefficients for the odd indices.
          (twiddle-factors (loop for i from 0 below (length odds)
                              collect (coefficient 1.0 i fft-length)))
-         ;; Multiply values with coefficients
+         ;; Multiply values with coefficients.
          (odd-terms (mapcar #'* odds twiddle-factors)))
     ;; Combine the two FFTs
     (concatenate 'list