diff --git a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo
index d2474c663..088caded8 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: 3540e82ad8a5b09256a5cc9e60579ce6
+config: f8334b53662a73306d6cdb4344442662
 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 5ae6bd58e..a3528828c 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
diff --git a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html
index 405f8aff5..9ca45a655 100644
--- a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html
+++ b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html
@@ -361,7 +361,12 @@ possible (i.e. diagonal or sideways).
            </p>
            <p>
             <span class="math notranslate nohighlight">
-             \(PWM_{left} = PWM_{right}`\)
+             \(PWM_{left} = PWM_{right}\)
+            </span>
+           </p>
+           <p>
+            <span class="math notranslate nohighlight">
+             \(PWM_{left} = PWM_{right}\)
             </span>
            </p>
            <div class="admonition-what-is-pwm admonition">