Fixed typo.
diff --git a/README.txt b/README.txt
index b99bf8e..e6d791d 100644
--- a/README.txt
+++ b/README.txt
@@ -17,7 +17,7 @@
(Tcl/TK). With a language interface, use ImageMagick to modify or create
images dynamically and automagically.
- ImageMagick utiilizes multiple computational threads to increase performance
+ ImageMagick utilizes multiple computational threads to increase performance
and can read, process, or write mega-, giga-, or tera-pixel image sizes.
ImageMagick is free software delivered as a ready-to-run binary distribution