Updated urls.py

Edited the paths to work properly and made the detailsview compatible with the respective paths

agusyquia_reading/bookshelf/urls.py

 from django.urls import path
 from .import views
+from .views import (
+    BooksView, BooksDetailsView, 
+    AuthorsView, AuthorsDetailsView
+)
 
 urlpatterns = [
-    path("", views.bookshelfIndex, name = "bookshelfIndex"),
+    path('home/', views.home_view, name='home'),
+    path('books/', BooksView.as_view(), name='books-list'),
+    path('books/<int:pk>/details', BooksDetailsView.as_view(), name='book-details'),
+    path('authors/', AuthorsView.as_view(), name='authors-list'),
+    path('authors/<int:pk>/details', AuthorsDetailsView.as_view(), name='author-details'),
 ]
 
 app_name = "bookshelf"
\ No newline at end of file