update revision log

Author: cmaglie

build/shared/revisions.txt

@@ -4,6 +4,7 @@ ARDUINO 1.6.9
 * Catch and report errors during parsing contributed index files
 * Fixed IDE version color on about dialog box. Thanks @ivanebernal
 * The "always-on-top update notification" popup is now less intrusive.
+* Fixed untraslated string during IDE startup splash window. Thanks @ivanebernal
 
 [core]
 * sam: Allow 3rd party boards that depend on SAM core to use their own