[whatwg] 2.2.2 editorial

[Elliotte Rusty Harold]

"For example, while strongly discouraged to do so, an implementation
"Foo Browser" could add a new DOM attribute "fooTypeTime" to a
control's DOM interface that returned the time it took the user to
select the current value of a control (say)."

while strongly discouraged to do so --> while strongly discouraged from doing so
delete "(say)". It's informal and redundant with "For example".

-- 
Elliotte Rusty Harold
elharo at ibiblio.org