Fixed typo [ci skip]

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>

Author: radarhere

docs/releasenotes/7.2.0.rst

@@ -25,5 +25,5 @@ Moved to ImageFileDirectory_v2 in Image.Exif
 Moved from the legacy :py:class:`PIL.TiffImagePlugin.ImageFileDirectory_v1` to
 :py:class:`PIL.TiffImagePlugin.ImageFileDirectory_v2` in
 :py:class:`PIL.Image.Exif`. This means that Exif RATIONALs and SIGNED_RATIONALs
-as now read as :py:class:`PIL.TiffImagePlugin.IFDRational`, instead of as a
+are now read as :py:class:`PIL.TiffImagePlugin.IFDRational`, instead of as a
 tuple with a numerator and a denominator.