update cran comments

Author: EmilHvitfeldt

cran-comments.md

@@ -4,7 +4,7 @@
 
 ## revdepcheck results
 
-We checked 2 reverse dependencies, comparing R CMD check results across CRAN and dev versions of this package.
+We checked 4 reverse dependencies, comparing R CMD check results across CRAN and dev versions of this package.
 
  * We saw 0 new problems
  * We failed to check 0 packages