[Rd] tiny typo in NEWS

[Ben Bolker]

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"browseURL"

    o	brwoseURL() has a new argument 'encodeIfNeeded' to use
	URLencode() in cases where it seems likely that would be
	helpful.  (Unfortunately, those are hard to guess.)


  By the way, thank you !!! to the R developers for

o cov() and cor() newly have the new option 'use = "everything"' as
 default, and so does var() with its default 'na.rm = FALSE'.  This
returns NA instead of signalling an error for NA observations.

   which seems as though it will restore the pre-2.7.0 behavior
for all-missing data ...

  Ben Bolker
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