Update github/github.go

Co-authored-by: Glenn Lewis <6598971+gmlewis@users.noreply.github.com>

github/github.go

@@ -241,7 +241,8 @@ type ListCursorOptions struct {
 	// This parameter must not be used in combination with last.
 	First int `url:"first,omitempty"`
 
-	// For paginated result sets, the number of results to include per page starting from the last matching result.
+	// For paginated result sets, the number of results per page (max 100), starting from the last matching result.
+	// This parameter must not be used in combination with first.
 	Last int `url:"last,omitempty"`
 
 	// A cursor, as given in the Link header. If specified, the query only searches for events after this cursor.