Fixed typo in index

_includes/sidebar.html

@@ -30,7 +30,7 @@
       <a class="sidebar-nav-item active" href="#S-cpl">CPL: C-style programming</a>
       <a class="sidebar-nav-item active" href="#S-profile">PRO: Profiles</a>
       <a class="sidebar-nav-item active" href="#S-gsl">GSL: Guideline support library</a>
-      <a class="sidebar-nav-item active" href="#S-faw">FAQ: Answers to frequently asked questions</a>
+      <a class="sidebar-nav-item active" href="#S-faq">FAQ: Answers to frequently asked questions</a>
       
       <a class="sidebar-nav-item active" href="#S-naming">NL: Naming and layout</a>
       <a class="sidebar-nav-item active" href="#S-performance">PER: Performance</a>