fixed typo (thx @camille_coti)

@@ -30,7 +30,7 @@ Python script.
 You may provide Python code as `\pyx{x = 5}` for a snippet that should
 be passed to Python `exec`, or as `\pyv{x+2}` for a snippet that
 should be passed to Python `eval` and the computed value integrated
-into the LaTeX document. You may sue also the corresponding
+into the LaTeX document. You may use also the corresponding
 environments `pyexec` and `pyeval`.
 
 A Python function `tex(s, *args)` may be called from Python snippets