Fixed a typo in note

s/though/through.
Fixed a typo in note

s/though/through/.
Fixed a typo in a note

s/though/through/.
Fixed a typo in a note

s/though/through/.
Fixed a typo in a note

s/though/through/.
Fixed a typo in a note

s/though/through/.
Merge pull request #671 from phistuck/patch-3

Fixed a typo in some notes