style: fix linting issues met Prettier

backend/src/entities/assignments/submission.entity.ts

@@ -8,7 +8,12 @@ export class Submission {
     @PrimaryKey({ type: 'string' })
     learningObjectHruid!: string;
 
-    @Enum({ items: () => {return Language}, primary: true })
+    @Enum({
+        items: () => {
+            return Language;
+        },
+        primary: true,
+    })
     learningObjectLanguage!: Language;
 
     @PrimaryKey({ type: 'string' })
@@ -17,13 +22,22 @@ export class Submission {
     @PrimaryKey({ type: 'integer' })
     submissionNumber!: number;
 
-    @ManyToOne({ entity: () => {return Student} })
+    @ManyToOne({
+        entity: () => {
+            return Student;
+        },
+    })
     submitter!: Student;
 
     @Property({ type: 'datetime' })
     submissionTime!: Date;
 
-    @ManyToOne({ entity: () => {return Group}, nullable: true })
+    @ManyToOne({
+        entity: () => {
+            return Group;
+        },
+        nullable: true,
+    })
     onBehalfOf?: Group;
 
     @Property({ type: 'json' })