Fix for multiple misspelled words

In Nova code, few misspelled words have been found.
The misspellings python library has been used to scan
all nova code and find misspelled words.
This commit fixes all misspelled words found with this library.

Change-Id: I5919dddbbe812d8d32ecd8b249c1312249cd2a66
Closes-Bug: 1323730
Merge "Fix for multiple misspelled words"