update templates

templates/index.html

@@ -1,4 +1,4 @@
-{% extends "base.jinja2" %}
+{% extends "base.html" %}
 {% block content %} 
 <form action="/ratio_pyro" method="POST" enctype="multipart/form-data">
     <h2>Simple Ratio Pyrometry Interface</h2>

templates/results.html

@@ -1,4 +1,4 @@
-{% extends "base.jinja2" %}
+{% extends "base.html" %}
 {% block content %} 
 
 <table class="img-table">