PDF: fix "Last row is not completed"

 2022-01-10T17:00:30,002 [Thread-662] INFO  eu.albina.controller.PublicationController:520 - Simple HTML production finished
 2022-01-10T17:00:30,071 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:30,154 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:30,747 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:30,813 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:30,869 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:31,417 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:31,502 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:31,601 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:32,216 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:32,270 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
 2022-01-10T17:00:32,324 [Thread-663] WARN  com.itextpdf.layout.renderer.TableRenderer:815 - Last row is not completed. Table bottom border may collapse as you do not expect it
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