Update documentation

Author: khuyentran1401

Chapter1/Chapter1.html

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-                    What Should You Expect From This Book?
+                    Efficient Python Tricks and Tools for Data Scientists
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 <li class="toctree-l1"><a class="reference internal" href="../how_to_read.html">1. How to Read This Book</a></li>
 <li class="toctree-l1 current active has-children"><a class="current reference internal" href="#">2. Python Built-in Methods</a><details open="open"><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
 <li class="toctree-l2"><a class="reference internal" href="string.html">2.1. String</a></li>
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-<li class="toctree-l3"><a class="reference internal" href="list/get_elements.html">2.5.2. Get Elements</a></li>
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-<li class="toctree-l3"><a class="reference internal" href="list/apply_functions_to_elements.html">2.5.5. Apply Functions to Elements in a List</a></li>
+<li class="toctree-l2"><a class="reference internal" href="number.html">2.2. Number</a></li>
+<li class="toctree-l2 has-children"><a class="reference internal" href="list/list.html">2.3. Python List Operations</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
+<li class="toctree-l3"><a class="reference internal" href="list/get_elements.html">2.3.2. Get Elements</a></li>
+<li class="toctree-l3"><a class="reference internal" href="list/unpack_iterables.html">2.3.3. Unpack Iterables</a></li>
+<li class="toctree-l3"><a class="reference internal" href="list/join_iterable.html">2.3.4. Join Iterables</a></li>
+<li class="toctree-l3"><a class="reference internal" href="list/apply_functions_to_elements.html">2.3.5. Apply Functions to Elements in a List</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="set.html">2.4. Set</a></li>
+<li class="toctree-l2"><a class="reference internal" href="dictionary.html">2.5. Dictionary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="function.html">2.6. Function</a></li>
+<li class="toctree-l2"><a class="reference internal" href="class.html">2.7. Classes</a></li>
+<li class="toctree-l2"><a class="reference internal" href="datetime.html">2.8. Datetime</a></li>
+<li class="toctree-l2"><a class="reference internal" href="code_speed.html">2.9. Code Speed</a></li>
+<li class="toctree-l2"><a class="reference internal" href="good_practices.html">2.10. Good Python Practices</a></li>
+<li class="toctree-l2"><a class="reference internal" href="python_new_features.html">2.11. New Features in Python</a></li>
 </ul>
 </details></li>
 <li class="toctree-l1 has-children"><a class="reference internal" href="../Chapter2/Chapter2.html">3. Python Utility Libraries</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>