Message about minor error message fixes.

git-svn-id: https://svn.r-project.org/R/trunk@63053 00db46b3-68df-0310-9c12-caf00c1e9a41
add note, missing )

git-svn-id: https://svn.r-project.org/R/trunk@63055 00db46b3-68df-0310-9c12-caf00c1e9a41