Thanks for taking your time to report this issue and help making Ubuntu better.
I can confirm this typo is present e2fsprogs 1.42.13-1ubuntu1 on Ubuntu 16.04 (http://manpages.ubuntu.com/manpages/xenial/en/man5/ext4.5.html). However, it has been corrected to "ext3" on Ubuntu 16.10 and newer. I did some research and found a corresponding bug report in Debian, see the attached bug watch.
Since the typo is fixed in newer releases, I'm marking this as Fix Released. If you need a fix for the bug in previous versions of Ubuntu, you may look into the the SRU Procedure [1]. (Though I am not sure whether this particular issue would qualify as an SRU)
Thanks for taking your time to report this issue and help making Ubuntu better.
I can confirm this typo is present e2fsprogs 1.42.13-1ubuntu1 on Ubuntu 16.04 (http:// manpages. ubuntu. com/manpages/ xenial/ en/man5/ ext4.5. html). However, it has been corrected to "ext3" on Ubuntu 16.10 and newer. I did some research and found a corresponding bug report in Debian, see the attached bug watch.
Since the typo is fixed in newer releases, I'm marking this as Fix Released. If you need a fix for the bug in previous versions of Ubuntu, you may look into the the SRU Procedure [1]. (Though I am not sure whether this particular issue would qualify as an SRU)
[1]: https:/ /wiki.ubuntu. com/StableRelea seUpdates# Procedure