Improve wording

Author: lourot

README.md

@@ -44,7 +44,7 @@ has defined a standard for storing
 in XMP. _Image Regions_ are useful for describing specific areas of the image
 (e.g. objects, people) or for indicating how the image should be cropped or
 rotated to best fit a given container. The
-[Frameright app](https://frameright.app/) can be used to define such _Image
+[Frameright webapp](https://frameright.app/) can be used to define such _Image
 Regions_ and insert them in the metadata of a picture.
 
 This WordPress plugin reads such _Image Regions_ in order to automatically crop

readme.txt

@@ -16,7 +16,7 @@ An image file (e.g. JPEG, PNG) contains metadata, i.e. information about the ima
 
 This WordPress plugin reads such image regions in order to automatically crop images the best possible way, depending on which container they are being displayed in.
 
-The [Frameright app](https://frameright.app/) can be used to define such image regions and insert them in the metadata of a picture.
+The [Frameright webapp](https://frameright.app/) can be used to define such image regions and insert them in the metadata of a picture.
 
 = How does it work? =