diff --git a/ESP-IDF_Robot/tutorial/docs/build/html/overview.html b/ESP-IDF_Robot/tutorial/docs/build/html/overview.html
index a32b07435..1e24f8cb3 100644
--- a/ESP-IDF_Robot/tutorial/docs/build/html/overview.html
+++ b/ESP-IDF_Robot/tutorial/docs/build/html/overview.html
@@ -15,7 +15,7 @@
     <link rel="index" title="Index" href="genindex.html" />
     <link rel="search" title="Search" href="search.html" />
     <link rel="next" title="DATA STRUCT" href="data.html" />
-    <link rel="prev" title="INTRODUCTION" href="intro.html" />
+    <link rel="prev" title="OVERVIEW" href="intro.html" />
    
   <link rel="stylesheet" href="_static/custom.css" type="text/css" />
   
@@ -227,7 +227,7 @@ Changing PWM on each channel determines the speed and direction of the RC car.</
 </search>
 <script>document.getElementById('searchbox').style.display = "block"</script><h3>Navigation</h3>
 <ul class="current">
-<li class="toctree-l1"><a class="reference internal" href="intro.html">INTRODUCTION</a></li>
+<li class="toctree-l1"><a class="reference internal" href="intro.html">OVERVIEW</a></li>
 <li class="toctree-l1 current"><a class="current reference internal" href="#">HOW DOES IT WORK?</a><ul>
 <li class="toctree-l2"><a class="reference internal" href="#reserved-pins-gpios">Reserved Pins &amp; GPIOs</a></li>
 <li class="toctree-l2"><a class="reference internal" href="#fusion-of-software-with-hardware">Fusion of Software with Hardware</a></li>
@@ -245,7 +245,7 @@ Changing PWM on each channel determines the speed and direction of the RC car.</
 <h3>Related Topics</h3>
 <ul>
   <li><a href="index.html">Documentation overview</a><ul>
-      <li>Previous: <a href="intro.html" title="previous chapter">INTRODUCTION</a></li>
+      <li>Previous: <a href="intro.html" title="previous chapter">OVERVIEW</a></li>
       <li>Next: <a href="data.html" title="next chapter">DATA STRUCT</a></li>
   </ul></li>
 </ul>
diff --git a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo
index 35664e389..49ebfcff4 100644
--- a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo
+++ b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file records the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: c36f7db2529272377fb380fff2fba929
+config: 62186cca664686421ef7360139582071
 tags: 62a1e7829a13fc7881b6498c52484ec0
diff --git a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf
index 93198bc90..8b69f3560 100644
Binary files a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf and b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf differ