Update modules/ROOT/pages/7.8.0-release-notes.adoc

Author: kemister85

modules/ROOT/pages/7.8.0-release-notes.adoc

@@ -73,7 +73,7 @@ For information on the **<Premium plugin name 1>** plugin, see: xref:<plugincode
 
 The {productname} {release-version} release includes an accompanying release of the **Math** premium plugin.
 
-**Math** includes the following fix.
+**Math** includes the following addition.
 
 ==== New `extended_mathml_attributes` and `extended_mathml_elements` options.
 // #TINY-11756