fix(curriculum): added extra line before </section> tag - Engl… (#36278)

curriculum/challenges/english/04-data-visualization/data-visualization-projects/visualize-data-with-a-bar-chart.english.md

@@ -55,4 +55,5 @@ tests: []
 ```js
 // solution required
 ```
+
 </section>

curriculum/challenges/english/04-data-visualization/data-visualization-projects/visualize-data-with-a-choropleth-map.english.md

@@ -53,4 +53,5 @@ tests: []
 ```js
 // solution required
 ```
+
 </section>

curriculum/challenges/english/04-data-visualization/data-visualization-projects/visualize-data-with-a-heat-map.english.md

@@ -59,4 +59,5 @@ tests: []
 ```js
 // solution required
 ```
+
 </section>

curriculum/challenges/english/04-data-visualization/data-visualization-projects/visualize-data-with-a-scatterplot-graph.english.md

@@ -57,4 +57,5 @@ tests: []
 ```js
 // solution required
 ```
+
 </section>

curriculum/challenges/english/04-data-visualization/data-visualization-projects/visualize-data-with-a-treemap-diagram.english.md

@@ -53,4 +53,5 @@ tests: []
 ```js
 // solution required
 ```
+
 </section>