[O] Use [org-latex] or [org-e-latex] for exporter problems

[Jambunathan K]

Please use [org-latex] or [org-e-latex] while reporting exporter
problems.  Likewise for other exporters.

If you are exporting with old exporter, export once with the new
exporter also, just for the fun of it.  More importantly report problems
or inconsistencies.  This will immensely help to improve the current
backends and associated infrastructure.
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