add note on '!' to vipsthumbnail docs

jcupitt · jcupitt · commit ae5cbcd98539 · 2018-07-17T12:39:48.000+01:00
oops, this was missing, thanks beaudet see https://github.com/jcupitt/libvips/issues/659
diff --git a/doc/Using-vipsthumbnail.md b/doc/Using-vipsthumbnail.md
@@ -82,6 +82,9 @@ is.
 You can append `<` or `>` to mean only resize if the image is smaller or larger
 than the target. 
 
+You can append `!` to force a resize to the exact target size, breaking
+the aspect ratio. 
+
 # Cropping
 
 `vipsthumbnail` normally shrinks images to fit within the box set by `--size`.
@@ -187,7 +190,7 @@ You can give options to the image write operation as a list of comma-separated
 arguments in square brackets. For example:
 
 ```
-$ vipsthumbnail fred.jpg ../jim.tif -o > tn_%s.jpg[Q=90,optimize_coding]
+$ vipsthumbnail fred.jpg ../jim.tif -o tn_%s.jpg[Q=90,optimize_coding]
 ```
 
 will write jpeg images with quality 90, and will turn on the libjpeg coding
