Updated index

pdf/index_for_pdf.html

@@ -104,7 +104,7 @@
 <strong>path, <a href="#path">23</a>-<a href="#pathlib">24</a></strong><br>
 <strong>pickle module, <a href="#pickle">25</a></strong><br>
 <strong>pillow library, <a href="#image">39</a></strong><br>
-<strong>plotting, <a href="#plot">34</a></strong><br>
+<strong>plotting, <a href="#plot">34</a>, <a href="#plotly">47</a></strong><br>
 <strong>print function, <a href="#print">22</a></strong><br>
 <strong>profiling, <a href="#profiling">36</a>-<a href="#timingasnippet">37</a></strong><br>
 <strong>progress bar, <a href="#progressbar">34</a></strong><br>

pdf/index_for_pdf_print.html

@@ -104,7 +104,7 @@
 <strong>path, 23-24</strong><br>
 <strong>pickle module, 25</strong><br>
 <strong>pillow library, 39</strong><br>
-<strong>plotting, 34</strong><br>
+<strong>plotting, 34, 47</strong><br>
 <strong>print function, 22</strong><br>
 <strong>profiling, 36-37</strong><br>
 <strong>progress bar, 34</strong><br>