fix(release): manually release a major version

There was an issue with a major release, so this manual-releases.md change is to release a new major version.

Reference: #336

BREAKING CHANGE: If you were using `debugDOM` before, use `prettyDOM` instead.

Author: Kent C. Dodds

other/manual-releases.md

@@ -41,4 +41,4 @@ change is to release a new patch version.
 Reference: #<the number of a relevant pull request, issue, or commit>
 ```
 
-The number of times we've had to do a manual release is: 5
+The number of times we've had to do a manual release is: 6