fix navigation

public/lectures/course1.html

@@ -43,7 +43,7 @@
 
     <!-- Navbar Start -->
     <nav class="navbar navbar-expand-lg bg-white navbar-light shadow sticky-top p-0">
-        <a href="../../index.html" class="navbar-brand d-flex align-items-center px-4 px-lg-5">
+        <a href="../index.html" class="navbar-brand d-flex align-items-center px-4 px-lg-5">
             <h2 class="m-0 text-primary"><i class="fa fa-book me-3"></i>PB009 Principles of Computer Graphics</h2>
         </a>
         <button type="button" class="navbar-toggler me-4" data-bs-toggle="collapse" data-bs-target="#navbarCollapse">
@@ -74,7 +74,7 @@
                     
                     </div>
                 </div>
-                <a href="index.html" class="nav-item nav-link active">Home</a>
+                <a href="../index.html" class="nav-item nav-link active">Home</a>
             </div>
 
         </div>
@@ -197,7 +197,7 @@
                     </div>
                     <div class="col-md-6 text-center text-md-end">
                         <div class="footer-menu">
-                            <a href="../../index.html">Home</a>
+                            <a href="../index.html">Home</a>
                         </div>
                     </div>
                 </div>

public/lectures/course2.html

@@ -43,7 +43,7 @@
 
     <!-- Navbar Start -->
     <nav class="navbar navbar-expand-lg bg-white navbar-light shadow sticky-top p-0">
-        <a href="../../index.html" class="navbar-brand d-flex align-items-center px-4 px-lg-5">
+        <a href="../index.html" class="navbar-brand d-flex align-items-center px-4 px-lg-5">
             <h2 class="m-0 text-primary"><i class="fa fa-book me-3"></i>PB009 Principles of Computer Graphics</h2>
         </a>
         <button type="button" class="navbar-toggler me-4" data-bs-toggle="collapse" data-bs-target="#navbarCollapse">
@@ -74,7 +74,7 @@
                     
                     </div>
                 </div>
-                <a href="index.html" class="nav-item nav-link active">Home</a>
+                <a href="../index.html" class="nav-item nav-link active">Home</a>
             </div>
 
         </div>
@@ -197,7 +197,7 @@
                     </div>
                     <div class="col-md-6 text-center text-md-end">
                         <div class="footer-menu">
-                            <a href="../../index.html">Home</a>
+                            <a href="../index.html">Home</a>
                         </div>
                     </div>
                 </div>