Updated the text of the about exams/exercises

src/pages/exam.tsx

@@ -221,6 +221,7 @@ export default function Page() {
 		if (selectedModules.length === 0) {
 			return (
 				<Selection
+					page="exams"
 					user={user!}
 					disableSelection
 					onStart={(modules, avoid) => {

src/pages/exercises.tsx

@@ -225,6 +225,7 @@ export default function Page() {
 		if (selectedModules.length === 0) {
 			return (
 				<Selection
+					page="exercises"
 					user={user!}
 					onStart={(modules, avoid) => {
 						setSelectedModules(modules);