updated for version 7.1b
diff --git a/runtime/doc/vi_diff.txt b/runtime/doc/vi_diff.txt
index 0c9213a..cd8ea4e 100644
--- a/runtime/doc/vi_diff.txt
+++ b/runtime/doc/vi_diff.txt
@@ -1,4 +1,4 @@
-*vi_diff.txt* For Vim version 7.1a. Last change: 2006 Nov 18
+*vi_diff.txt* For Vim version 7.1b. Last change: 2007 May 07
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -155,7 +155,7 @@
considered changed anymore. You can exit it with :q, without <!>.
When undoing a few changes and then making a new change Vim will
create a branch in the undo tree. This means you can go back to any
- state of the text, there is no risc of a change causing text to be
+ state of the text, there is no risk of a change causing text to be
lost forever. |undo-tree|
Graphical User Interface (GUI). |gui|