Fix typo

syohex · syohex · commit 4adb68ae4748 · 2020-09-08T07:42:14.000+09:00
diff --git a/README.md b/README.md
@@ -9,7 +9,7 @@
 Call the following command to enable it.
 
 ```
-M-x ivy-file-preivew-mode
+M-x ivy-file-preview-mode
 ```
 
 ## Contribution
