chore: Fix editing

src/app/create-todo/create-todo.html

@@ -1,7 +1,8 @@
-<p>create-todo works!</p>
 <form [formGroup]="form" (submit)="submit()">
-  <input type="number" formControlName="id" style="display: hidden" />
   <input type="text" formControlName="title" />
   <input type="date" formControlName="dueDate" />
-  <button type="submit">Create</button>
+  <button type="submit">{{ isEditing() ? "Update" : "Create" }}</button>
+  @if (isEditing()) {
+  <button type="button" (click)="stopEdit()">Stop Editing</button>
+  }
 </form>