typos from Will Farr

svn: r8440

collects/scribblings/foreign/foreign.scrbl

@@ -7,7 +7,7 @@
 
 The @schememodname[scheme/foreign] library enables the direct use of
 C-based APIs within Scheme programs---without writing any new C
-code). From the Scheme perspective, functions and data with a C-based
+code. From the Scheme perspective, functions and data with a C-based
 API are @idefterm{foreign}, hence the term @defterm{foreign
 interface}. Furthermore, since most APIs consist mostly of functions,
 the foreign interface is sometimes called a @defterm{foreign function

collects/scribblings/foreign/unsafe.scrbl

@@ -26,4 +26,5 @@ should be considered a bug in your code.}
 
 Cooperates with @scheme[provide*] to define @scheme[id] as a
 @scheme[unsafe!]-like form that introduces definitions for each
-binding provided as @scheme[unsafe].}
+binding provided as @scheme[unsafe].  The @scheme[define-unsafer] form
+must occur after all the @scheme[provide*] forms to which it refers.}