edited views.py files and urls.py files of homepage, about, and contact apps

tanyayotoko_music/about/urls.py

+from django.urls import path
+from .views import index
+urlpatterns = [
+	path('', index, name='index'),
+]
+
+app_name = "about"

tanyayotoko_music/about/views.py

 from django.shortcuts import render
 
-# Create your views here.
+from django.http import HttpResponse
+
+def index(request):
+    return HttpResponse('My name is Tanya and I like listening to band music.')

tanyayotoko_music/contact/urls.py

+from django.urls import path
+from .views import index
+urlpatterns = [
+	path('', index, name='index'),
+]
+
+app_name = "contact"

tanyayotoko_music/contact/views.py

 from django.shortcuts import render
 
-# Create your views here.
+from django.http import HttpResponse
+
+def index(request):
+    return HttpResponse('Contact Number: 09170001111')

tanyayotoko_music/homepage/urls.py

+from django.urls import path
+from .views import index
+urlpatterns = [
+	path('', index, name='index'),
+]
+
+
+app_name = "homepage"

tanyayotoko_music/homepage/views.py

 from django.shortcuts import render
 
-# Create your views here.
+from django.http import HttpResponse
+
+def index(request):
+    return HttpResponse('Welcome to Tanya’s Music Library!')