add -s in user guide

dbc48a66 · Nicolas MAILLET · df253c38 · dbc48a66
Commit dbc48a66 authored Apr 04, 2019 by Nicolas MAILLET
--- a/docs/userguide.rst
+++ b/docs/userguide.rst
@@ -113,7 +113,7 @@ To perform sequential digestion of the sequence "QWSDORESDF" with enzymes 2 and

 .. code-block:: none

-    rpg -i QWSDORESDF -o output_file.fasta -e 2 5
+    rpg -s QWSDORESDF -o output_file.fasta -e 2 5

 Sequential digestion of a (multi)fasta file
 """""""""""""""""""""""""""""""""""""""""""