[openib-general] Minor edits to installation cheat sheet needed

[Michael S. Tsirkin]

Quoting r. Pradeep Satyanarayana <pradeep at us.ibm.com>:
> > This works for me as documented in wiki (with a single =).
> > Might this depend on udev version? 
> 
> Hmmm....quite possibly. Here is what I have : 
> udevinfo -V 
> udevinfo, version 094 

Which distro?

Here's e.g. RHAS4 U3:
# udevinfo -V
udevinfo, version 039

well, I guess we need both formats in wiki.
go ahead and add yours as well.

-- 
MST