Update runtime/tutor

Co-authored-by: David Else <12832280+David-Else@users.noreply.github.com>

runtime/tutor

@@ -1543,10 +1543,10 @@ letters! that is not good grammar. you can fix this.
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  The :insert-output command inserts a shell command output before
- each active selection. Similary, the :append-output appends a
+ each active selection. Similarly, the :append-output appends a
  shell command output after each active selection.
 
- Go the the next line starting with -->, move to the space
+ Go the next line starting with -->, move to the space
  character at the end of the line, and enter
      :append-output date
  to append the date at the end of the line.