trivial typo in ?Matrix::sparse.model.matrix.Rd

? "form" -> "from". Diff against latest SVN:

Index: sparse.model.matrix.Rd
===================================================================
--- sparse.model.matrix.Rd??? (revision 3336)
+++ sparse.model.matrix.Rd??? (working copy)
@@ -4,7 +4,7 @@
 ?\alias{fac2sparse}
 ?\alias{fac2Sparse}
 ?\description{Construct a sparse model or \dQuote{design} matrix,
-? form a formula and data frame (\code{sparse.model.matrix}) or a single
+? from a formula and data frame (\code{sparse.model.matrix}) or a single
 ?? factor (\code{fac2sparse}).

 ?? The \code{fac2[Ss]parse()} functions are utilities, also used