Updated release notes for 1.8

Author: jtreanor

RELEASE-NOTES.txt

@@ -1,15 +1,12 @@
 1.9
 -----
-
-1.8.1
------
-- bugfix: fixes "Unable to load content" error message when attempting to get Top Performers content.
 
 1.8
 -----
 - update: this app supports iOS 12.0 and up.
 - improvement: improved support for large text sizes.
 - bugfix: fixes Order List not loading for some users.
+- bugfix: fixes "Unable to load content" error message when attempting to get Top Performers content.
 
 1.7
 -----