Added period

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

Author: radarhere

src/PIL/ImageCms.py

@@ -743,7 +743,7 @@ def getProfileInfo(profile):
     a **PyCMSError** is raised.
 
     If an error occurs while trying to obtain the info tag, a **PyCMSError**
-    is raised
+    is raised.
 
     Use this function to obtain the information stored in the profile's
     info tag.  This often contains details about the profile, and how it