Update broken link (to Python chapter) in index.html

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@@ -173,7 +173,7 @@ <h2>Why R?<a class="anchor" aria-label="anchor" href="#why-r"><i class="fas fa-l
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 <p>Moreover, via the <em>reticulate</em> package, it is possible (but not always easy) to benefit from Python tools as well. The most prominent example is the adaptation of the <em>tensorflow</em> and <em>keras</em> libraries to R. Thus, some very advanced Python material is readily available to R users. This is also true for other resources, like Stanford’s CoreNLP library (in Java) which was adapted to R in the package <em>coreNLP</em> (which we will not use in this book).</p>
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-Nevertheless, the Python version of the book can be found in <a href="https//www.mlfactor.com/python.html">Chapter 18</a>.  
+Nevertheless, the Python version of the book can be found in <a href="http://www.mlfactor.com/python.html">Chapter 18</a>.  
 <div id="coding-instructions" class="section level2 unnumbered">
 <h2>Coding instructions<a class="anchor" aria-label="anchor" href="#coding-instructions"><i class="fas fa-link"></i></a>
 <a class="anchor" aria-label="anchor" href="#coding-instructions"><i class="fas fa-link"></i></a>