Make corrections to tabulating CSV-data tutorial

* Replace highlight tags with triple backticks
* Replace hard tab characters with 2 spaces
* Fix typos
* Change tutorial title

docs/_tutorials/csv-to-table.md

@@ -1,5 +1,5 @@
 ---
-title: Show CSV as a table
+title: Tabulate CSV Data
 author: MichaelCurrin
 date: 2020-04-01 20:30:00 +0200
 ---
@@ -36,11 +36,12 @@ Jack,Hill,25,Australia
 
 That data file will now be available in Jekyll like this:
 
-{% highlight liquid %}
 {% raw %}
+```liquid
 {{ site.data.authors }}
+```
 {% endraw %}
-{% endhighlight %}
+
 
 ## 2. Add a table
 
@@ -52,20 +53,18 @@ For example: `table_test.md`
 ---
 title: Table test
 ---
-
 ```
 
-
 ### Inspect a row
 
 Grab the first row and see what it looks like using the `inspect` filter.
 
-{% highlight liquid %}
 {% raw %}
+```liquid
 {% assign row = site.data.authors[0] %}
 {{ row | inspect }}
+```
 {% endraw %}
-{% endhighlight %}
 
 
 The result will be a _hash_ (an object consisting of key-value pairs) which looks like this:
@@ -81,28 +80,29 @@ The result will be a _hash_ (an object consisting of key-value pairs) which look
 
 Note that Jekyll _does_ in fact preserve the order here, based on the original CSV.
 
+
 ### Unpack a row
 
 A simple solution would be to hardcode the field names when looking up the row values by key.
 
-{% highlight liquid %}
 {% raw %}
+```liquid
 {{ row["First name"] }}
 {{ row["Last name"] }}
+```
 {% endraw %}
-{% endhighlight %}
 
 But we prefer a solution that will work for _any_ CSV, without specifying the column names upfront.
 So we iterate over the `row` object using a `for` loop:
 
-{% highlight liquid %}
 {% raw %}
+```liquid
 {% assign row = site.data.authors[0] %}
 {% for pair in row %}
   {{ pair | inspect }}
 {% endfor %}
+```
 {% endraw %}
-{% endhighlight %}
 
 This produces the following. Note the first item in each pair is the _key_ and the second will be
 the _value_.
@@ -120,8 +120,8 @@ Here we make a table with a single table row (`tr`), made up of table header (`t
 the header name by getting the first element (at index `0`) from `pair`. We ignore the second
 element as we don't need the value yet.
 
-{% highlight liquid %}
 {% raw %}
+```liquid
 <table>
   {% for row in site.data.authors %}
     {% if forloop.first %}
@@ -134,10 +134,9 @@ element as we don't need the value yet.
   {% endfor %}
 </table>
 {% endraw %}
-{% endhighlight %}
+```
 
-
+For now, we do not display any content from the second row onwards. We achieve this by using
-For now,s we do not display any content for the second row onwards - we achieve this by using
 `forloop.first`, since this will return true for the _first_ row and false otherwise.
 
 
@@ -150,8 +149,8 @@ For convenience, we render using the `tablerow` tag - this works like a `for` lo
 data will be rendered with `tr` and `td` HTML tags for us. Unfortunately, there is no equivalent for
 the header row, so we must write that out in full, as in the previous section.
 
-{% highlight liquid %}
 {% raw %}
+```liquid
 ---
 title: Table test
 ---
@@ -171,11 +170,11 @@ title: Table test
     {% endtablerow %}
   {% endfor %}
 </table>
+```
 {% endraw %}
-{% endhighlight %}
 
 
-With the code above, our output table should look like this:
+With the code above, the complete table would look like this:
 
 <table>
   <tr>