[skip ci] fix type and test skip ci message

Author: pietroppeter

Diff for: sandbox/notes.md

@@ -11,7 +11,7 @@
   - json backend should always be defined
     - but stuff can be marked as to be skipped, e.g. the default theme should not be serialized
 
-## Fifth day - Martch 2nd
+## Fifth day - March 2nd
 
 what could I work on:
 - on theme