Results of example code for select-from-metas show only errors #88

In the documentation, the results for example code under the select-from-metas function show only errors.

In the documentation, the results for example code under the [`select-from-metas`](http://pkg-build.racket-lang.org/doc/pollen/Template.html#%28def._%28%28lib._pollen%2Ftemplate..rkt%29._select-from-metas%29%29) function show only errors.

Thanks.

Revise this example to use inline pollen module

Revise this example to use inline `pollen` module

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Results of example code for select-from-metas show only errors #88