[GNC-dev] Sample Report with Examples

[flywire]

Geert Janssens wrote:

> I'd rather use values like "Sample string", "Sample Document Title" and
> "Sample Report"
>
I've made that change in my fork as well as changed section to Sample! and
renamed file to sample-report.scm. It looks good and not like a kludge.

I'd also suggest:
* minor format fixes and update references
* Delete welcome-to-gnucash.scm given it was gutted in December 2017

Trivial updates would be needed for:
https://www.gnucash.org/docs/v4/C/gnucash-help/report-create.html
https://wiki.gnucash.org/wiki/index.php?title=Custom_Reports and
https://wiki.gnucash.org/wiki/Report_GUIDs

Need to check GnuCash repo for hello-world.scm references.