Update readme

kkroening · kkroening · commit 887f386d26b8 · 2017-05-27T23:18:25.000-10:00
diff --git a/README.md b/README.md
@@ -109,7 +109,7 @@ node = ffmpeg.filter_(node, 'fps', fps=25, round='up')
 node = ffmpeg.output(node, 'dummy2.mp4')
 ```
 
-When in doubt, look at the [existing filter implementations](https://github.com/kkroening/ffmpeg-python/blob/master/ffmpeg/_filters.py) and/or the [official ffmpeg filter documentation](https://ffmpeg.org/ffmpeg-filters.html).
+When in doubt, refer to the [existing filter implementations](https://github.com/kkroening/ffmpeg-python/blob/master/ffmpeg/_filters.py) and/or the [official ffmpeg filter documentation](https://ffmpeg.org/ffmpeg-filters.html).
 
 ## Contributing
 
