Fix typo EXPORT -> EXPOSED

Author: rstub

vignettes/Rcpp-extending.Rmd

@@ -202,15 +202,15 @@ can appear after the `Rcpp.h` file is included, and therefore take
 full advantage of the \pkg{Rcpp} type system.
 
 Another non-intrusive option is to expose an external pointer. The macro
-`RCPP_EXPORT_WRAP` provides an easy way to expose a \proglang{C++} class
+`RCPP_EXPOSED_WRAP` provides an easy way to expose a \proglang{C++} class
 to \proglang{R} as an external pointer. It can be used instead of specializing
 `Rcpp::wrap`, and should not be used simultaneously.
 
 ```{Rcpp, eval = FALSE}
 #include RcppCommon.h
 #include foobar.h
 
-RCPP_EXPORT_WRAP(Bar);
+RCPP_EXPOSED_WRAP(Bar);
 ```
 
 ## Templates and partial specialization
@@ -292,7 +292,7 @@ namespace Rcpp {
 ```
 
 Furthermore, another non-intrusive option is to opt for sharing an R
-external pointer. The macro `RCPP_EXPORT_AS` provides an easy way to
+external pointer. The macro `RCPP_EXPOSED_AS` provides an easy way to
 extend `Rcpp::as` to expose \proglang{R} external pointers to
 \proglang{C++}. It can be used instead of specializing `Rcpp::as`, and
 should not be used simultaneously.
@@ -301,7 +301,7 @@ should not be used simultaneously.
 #include RcppCommon.h
 #include foobar.h
 
-RCPP_EXPORT_AS(Bar);
+RCPP_EXPOSED_AS(Bar);
 ```
 
 With this being said, there is one additional macro that can be used to