Use 'mymodule' in l3keys examples rather than 'module' or 'SomePackage'.

I think it is best to stick to one choice.  The rest of l3keys uses 
\meta{module} for the module's name.


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4512 de43f980-851b-0410-b2f7-c40aca1f87e0
Alignment and end-of-line white space removal.


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4513 de43f980-851b-0410-b2f7-c40aca1f87e0