Fix spelling

Author: jimhester

cran-comments.md

@@ -1,18 +1,16 @@
 ## Test environments
 
-* GitHub Actions (ubuntu-16.04): 3.3, 3.4, 3.5, oldrel, release, devel
+* GitHub Actions - (ubuntu-18.04): 3.3, 3.4, 3.5, oldrel, release, devel
 * GitHub Actions (windows): release
 * Github Actions (macOS): release, devel
-* win-builder: devel
 
 ## R CMD check results
 
 0 ERRORs | 0 WARNINGs | 0 NOTES.
 
 ## revdepcheck results
 
-We checked 331 reverse dependencies, comparing R CMD check results across C
-RAN and dev versions of this package.
+We checked 331 reverse dependencies, comparing R CMD check results across CRAN and dev versions of this package.
 
  * We saw 3 new problems
  * We failed to check 2 packages
@@ -22,7 +20,7 @@ Issues with CRAN packages are summarised below.
 ### New problems
 (This reports the first line of each new failure)
 
-* box - Devtools is used in a box test that relies on the presense of a non-exported function from devtools. This private function was removed, which broke the test. We sent the box authors a pull request with the necessary change to fix their test. (https://github.com/klmr/box/pull/193)
+* box - Devtools is used in a box test that relies on the presence of a non-exported function from devtools. This private function was removed, which broke the test. We sent the box authors a pull request with the necessary change to fix their test. (https://github.com/klmr/box/pull/193)
   checking tests ... ERROR
 
 * IalsaSynthesis - This is due to to removal of the `inst()` function from devtools. We notified these maintainers about this on 2020-07-30 (https://github.com/IALSA/IalsaSynthesis/issues/26), but they have not updated their package.