Section 4 duplicated section

[brennennen]

On the beej.us site, there is a rendering bug around section 4.2 (it duplicates the entire section except the code snippet, see screen shot below). https://beej.us/guide/bgipc/html/split/pipes.html#the-search-for-pipe-as-we-know-it

Looks like line 46 of bgipc_part_0400_pipes.md has a missing closing square bracket. I balanced the brackets on this line and things looked as expected.

https://github.com/beejjorgensen/bgipc/blob/53dac10298a3b828b3a8c14fa808e68a275994ff/src/bgipc_part_0400_pipes.md?plain=1#L46 issue: As a [flx[useless example|pipe1.c], the following program creates, fix: As a [flx[useless example|pipe1.c]], the following program creates,