[README] update

README.md

@@ -30,18 +30,18 @@ Writing an exam is now easy (see [API](#api) for all options):
 #show: exam.with(
     title: "Exam",
 
-    course_title: [Abstract Binary Computation & Elegent Finite Graphs],
+    course-title: [Abstract Binary Computation & Elegant Finite Graphs],
 
     institution: [Super University],
 
     date: "1. January 1970",
-    course_short_title: "ABC & EFG",
+    course-short-title: "ABC & EFG",
 
-    course_code: "π",
-    duration_minutes: "90", 
+    course-code: "π",
+    duration-minutes: "90",
 
-    ask_trainer_name: false,
-    ask_group: true,
+    ask-trainer-name: false,
+    ask-group: true,
 
     language: "en",
 )
@@ -139,4 +139,3 @@ top and bottom lines are bold.
   exercise-numbering: "1",
 )
 ```
-