docs: fix manual version

lsf37 · lsf37 · commit 7b36a83dfb45 · 2023-03-11T13:04:48.000+11:00
diff --git a/docs/xmanual.tex b/docs/xmanual.tex
@@ -58,7 +58,7 @@
 \vspace*{15ex}
 {\Huge \sffamily \bfseries JFlex User's Manual}\\
 \bigskip
-Version 1.10.0, {\today}
+Version 1.9.1, {\today}
 \end{center}
 
 \newpage
