Minor adjustments to 2018/hou

Formatting fixes in README.md.

Add entry to bugs.md as it will abort due to assertion failure. But this
is expected and the entry works fine (open the html file and you'll see
that). So INABIAF.

bugs.md

@@ -825,6 +825,19 @@ for now.
 
 # 2018
 
+## [2018/hou](2018/hou/prog.c) ([README.md](2018/hou/README.md))
+## STATUS: INABIAF - please **DO NOT** fix
+
+When you run it you will see something like:
+
+```sh
+$ ./prog < ioccc.json > ioccc.html
+Assertion failed: (rulez), function C, file prog.c, line 124.
+Abort trap: 6
+```
+
+but this is expected and the file `ioccc.html` will be generated properly.
+
 
 # 2019