Created edit-author.html file

diannedelpilar_reading/bookshelf/templates/bookshelf/edit-book.html

+{% extends "base.html" %}
+
+{% block page-title %}Edit Book{% endblock %}
+
+{% block content %}
+    <form method="POST">
+        {% csrf_token %}
+        {{form.as_p}}
+        <button class="button" type="submit">Save Changes</button>
+    </form>
+{% endblock %}