Some 1posix man pages do not link properly

[wyphan]

For instance, you can test this with the following query

set -e

The hyperlink on set leads to https://explainshell.com/explain/1posix/set.1pos when it should have been https://explainshell.com/explain/1posix/set

Another example is

ulimit

which links to https://explainshell.com/explain/1posix/ulimit.1pos instead of the correct https://explainshell.com/explain/1posix/ulimit