Updated broken link for course 9

Author: sux13

index.html

@@ -237,7 +237,7 @@ <h1>
 						<tr>
 							<td align="center">Developing Data Products</td>
 							<td align="center">
-								<a href="9_DEVDATAPROD/Developing_Data_Products_Course_Notes_HTML.html">
+								<a href="9_DEVDATAPROD/Developing_Data_Products_Course_Notes.html">
 									<span class="fa fa-link" title = "HTML"></span>
 								</a>
 							</td>
@@ -247,7 +247,7 @@ <h1>
 								</a>
 							</td>
 							<td align="center">
-								<a href="9_DEVDATAPROD/Developing%20Data%20Products%20Course%20Notes%20HTML.Rmd">
+								<a href="9_DEVDATAPROD/Developing%20Data%20Products%20Course%20Notes.Rmd">
 									<span class="fa fa-file-code-o" title = "Rmd"></span>
 								</a>
 							</td>