fixing 404 for null pagebase

Author: Jake Reynolds

404.html

@@ -1,5 +1,6 @@
 ---
 ---
 <script>
-  window.location.href='{{site.pagebase}}'
+  var defaultPage = '{{site.pagebase}}';
+  window.location.href = defaultPage || '/';
 </script>

index.html

@@ -9,9 +9,9 @@ <h2 id="header">Welcome to the NetSPI SQL Injection Wiki!</h2>
   <p class="readableText">Below is an outline of the wiki's structure, laid out in the order of a normal escalation path. Certain queries may be version specific.</p>
   <h3>Step 1: <a href="{{site.pagebase}}/detection">Injection Detection</a></h3>
   <h3>Step 2: <a href="{{site.pagebase}}/dbmsIdentification">DBMS Identification</a></h3>
-  <h3>Step 3: <a href="{{site.pagebase}}/injectionTypes">Injection Types</a></h3>
-  <h3>Step 4: <a href="{{site.pagebase}}/injectionTechniques">Injection Techniques</a></h3>
-  <h3>Step 5: <a href="{{site.pagebase}}/attackQueries">Attack Queries</a></h3>
+  <h3>Step 3: <a href="{{site.pagebase}}/injectionTypes/">Injection Types</a></h3>
+  <h3>Step 4: <a href="{{site.pagebase}}/injectionTechniques/">Injection Techniques</a></h3>
+  <h3>Step 5: <a href="{{site.pagebase}}/attackQueries/">Attack Queries</a></h3>
   <p></p>
   <h3>Contributing</h3>
   <p>Please feel free to submit pull requests or issues on our <a href="https://github.com/NetSPI/SQLInjectionWiki" target="_blank" rel="noopener">Github</a> if you notice something that is missing or inaccurate.</p>