minor layout and grammar changes

src/_includes/layout/base.njk

@@ -23,7 +23,7 @@
         <header>{% include 'partials/header.njk' %}</header>
         <hr/>
         <article>
-            <h1>{{ title }}</h1>
+            <h2>{{ title }}</h2>
             {{ content | safe }}
         </article>
       </div>

src/about.md

@@ -3,4 +3,4 @@ title: about
 layout: layout/base.njk
 ---
 
-Heya 👋 this is my homepage.
+heya 👋 this is my homepage.

src/contact.md

@@ -3,4 +3,4 @@ title: contact
 layout: layout/base.njk
 ---
 
-Heya 👋 this is my contact page
+heya 👋 this is my contact page