Update help files.
diff --git a/runtime/doc/editing.txt b/runtime/doc/editing.txt
index b4cdc48..a10e822 100644
--- a/runtime/doc/editing.txt
+++ b/runtime/doc/editing.txt
@@ -1376,7 +1376,7 @@
don't write the file encrypted! You need to rebuild the Vim binary to fix
this.
-*E831* This is an internal error, "cannot happen". If you can reproduc it,
+*E831* This is an internal error, "cannot happen". If you can reproduce it,
please report to the developers.
When reading a file that has been encrypted and the 'key' option is not empty,